CN108479766A - It a kind of composite photo-catalyst of the monatomic-C quantum dots of Pt and prepares and application - Google Patents
It a kind of composite photo-catalyst of the monatomic-C quantum dots of Pt and prepares and application Download PDFInfo
- Publication number
- CN108479766A CN108479766A CN201810213580.0A CN201810213580A CN108479766A CN 108479766 A CN108479766 A CN 108479766A CN 201810213580 A CN201810213580 A CN 201810213580A CN 108479766 A CN108479766 A CN 108479766A
- Authority
- CN
- China
- Prior art keywords
- catalyst
- composite photo
- titanium dioxide
- monatomic
- quantum dots
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 69
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 69
- 239000002096 quantum dot Substances 0.000 title claims abstract description 40
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 101
- 239000003054 catalyst Substances 0.000 claims abstract description 50
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 16
- 239000013078 crystal Substances 0.000 claims description 15
- 239000001257 hydrogen Substances 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 13
- 238000005119 centrifugation Methods 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 11
- 238000002604 ultrasonography Methods 0.000 claims description 10
- 238000000354 decomposition reaction Methods 0.000 claims description 9
- 239000003792 electrolyte Substances 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000006303 photolysis reaction Methods 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 4
- 229910021650 platinized titanium dioxide Inorganic materials 0.000 claims description 3
- 150000003057 platinum Chemical class 0.000 claims description 2
- 239000012266 salt solution Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 abstract description 12
- 238000001035 drying Methods 0.000 description 10
- 238000003756 stirring Methods 0.000 description 10
- 230000001699 photocatalysis Effects 0.000 description 9
- 229910002804 graphite Inorganic materials 0.000 description 8
- 239000010439 graphite Substances 0.000 description 8
- 239000006228 supernatant Substances 0.000 description 8
- 229910000510 noble metal Inorganic materials 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 5
- 229910003074 TiCl4 Inorganic materials 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005286 illumination Methods 0.000 description 5
- 229910052697 platinum Inorganic materials 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 239000003643 water by type Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 230000015843 photosynthesis, light reaction Effects 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001493 electron microscopy Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical group [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/344—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of electromagnetic wave energy
- B01J37/345—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of electromagnetic wave energy of ultraviolet wave energy
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/042—Decomposition of water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Catalysts (AREA)
Abstract
The present invention provides a kind of composite photo-catalysts of the monatomic C quantum dots of Pt, including：Titanium dioxide and the Pt on the titanium dioxide is supported on monatomic form, C quantum dots have been also loaded on the titanium dioxide.By the way that Pt is loaded on the titanium dioxide in the form of monoatomic so that titanium dioxide and Pt form a large amount of hetero-junctions, greatly inhibit the compound of light induced electron and hole, improve the catalytic capability of photochemical catalyst；Carbon quantum is added, greatly extends the catalytic life of photochemical catalyst.
Description
Technical field
The present invention relates to photochemical catalyst fields, belong to a kind of composite photo-catalyst of the monatomic-C quantum dots of Pt.
Background technology
In recent years, energy demand is constantly increased with the increasingly exhausted and people of global fossil energy, finds new energy
Source substitutes traditional fossil energy, it has also become people's one of problem in the urgent need to address at present.
Hydrogen is secondary energy sources, and ignition temperature is 400 DEG C, burns in air, reacts with oxygen, generates water, this
There is big calorimetric to release in one reaction process, be three times of gasoline under the same terms, while the generation of contamination-free, is current people
One of widely applied new energy.
One of common preparation method of hydrogen is exactly to prepare hydrogen using solar energy photocatalytic water under the auxiliary of photochemical catalyst
Gas.In the photocatalytic process, photochemical catalyst plays the role of vital.TiO2Photochemical catalyst is due to its good electron energy band
Structure, nontoxicity and photostability, it has also become one of the catalyst studied and be most widely used.However, TiO2Photocatalysis
During being catalyzed photocatalytic water, light induced electron and hole are easy to be combined with each other again, limit Photocatalyzed Hydrogen Production for agent
Effect.In TiO2Precious metals pt, Pd and the nonmetallic C of area load Nano grade are to improve catalyst Photocatalyzed Hydrogen Production ability
Effective means.
Research shows that carried noble metal or nonmetallic TiO2It is main favorable to be and TiO in photochemical catalyst2It is brilliant
The noble metal or non-metallic atom that face is in direct contact, and most atoms in nano particle and TiO2Crystal face be non-contact
, this allows for a large amount of noble metal and loses catalytic action in the photocatalytic process, and the utilization rate of noble metal is caused to reduce, catalysis
Efficiency is low, and a large amount of noble metals is caused to waste.
By the study found that compared with nano particle, noble metal is dispersed in TiO in atom mostly2On and C with quantum
Point form is dispersed in TiO2On be greatly improved photo-catalysis capability, theoretical utilization rate may be up to 100%.For example, Yulei Sui etc.
People is in " Atomically dispersed Pt on specific TiO2facets for photocatalytic
H2It is introduced in evolution " (Journal fo Catalysis 353,2017,250-255) text, Pt is with monatomic form
It is supported on TiO2The photochemical catalyst of upper formation is dispersed in TiO with nano level Pt2The photochemical catalyst of upper formation is compared, photocatalysis
Performance obtains prodigious raising.Pengxin Liu et al. people is in " Photochemical route for synthesizing
atomically dispersed palldium catalysts”(Science,Vol.352,Issue 6287,pp.797-
800) it is introduced in a text, Pd is supported on TiO with monatomic form2The photochemical catalyst of upper formation is dispersed in TiO with nano level Pd2
The photochemical catalyst of upper formation is compared, and photocatalysis performance obtains prodigious raising.
But either load has the TiO of monatomic noble metal2Photochemical catalyst, or load have C quantum dot (carbon quantums
Point) TiO2Photochemical catalyst, catalytic life is all shorter, and after being catalyzed a period of time, catalytic capability can be greatly reduced, and be generated therewith
The amount of hydrogen also drastically declines, and has seriously affected the use of photochemical catalyst.
Invention content
Therefore, the technical problem to be solved in the present invention is to overcome load in the prior art to have monatomic noble metal or load
There is the TiO of C quantum dots2The short defect of the catalytic life of photochemical catalyst, to provide a kind of answering for monatomic-C quantum dots of Pt
Closing light catalyst and preparation and application.
A kind of composite photo-catalyst of the monatomic-C quantum dots of Pt, including：It titanium dioxide and is supported on monatomic form
Pt on the titanium dioxide has been also loaded carbon quantum dot on the titanium dioxide.
Preferably, in the composite photo-catalyst, in the composite photo-catalyst, the amount of the carbon quantum dot is institute
State the 0.2wt%-2wt% of the quality of composite photo-catalyst.
Preferably, in the composite photo-catalyst, the titanium dioxide is monocrystal；
The area summation of (001) crystal face of the titanium dioxide is the 30%-70% of the crystalline areas of the titanium dioxide.
Preferably, in the composite photo-catalyst, the Pt is supported on the titanium dioxide with monatomic form
(101) on crystal face.
Preferably, in the composite photo-catalyst, in the composite photo-catalyst, the amount of the Pt is described compound
The 0.1wt%-0.9wt% of photochemical catalyst quality.
A kind of method of composite photo-catalyst described in system, includes the following steps：
By Pt with monatomic form load the monatomic catalyst of Pt/TiO2 on the titanium dioxide, carbon quantum dot and go from
Sub- water mixing, ultrasound, vacuum-sintering obtain the monatomic catalyst of C quantum dots-Pt；
120-160 DEG C of the temperature of vacuum-sintering, time 12-24h.
Preferably, in the preparation method, further include：
(1) titanium tetrachloride, ethylene glycol and acid solution are mixed, hydro-thermal obtains monocrystal titanium dioxide；
(2) the monocrystal titanium dioxide that step (1) is prepared is mixed with deionized water, platinum salt solution is then added,
Ultraviolet light centrifuges, dry, obtains the monatomic catalyst of the Pt/TiO2.
Preferably, in the preparation method,
The volume ratio of titanium tetrachloride, ethylene glycol and acid solution is 2:60:(0.39-0.79)；The volume of the acid solution is dense
Degree is 40%-50%；
The temperature of hydro-thermal is 180-200 DEG C, the time 18-24h of hydro-thermal.
Preferably, in the preparation method, further include：The carbon quantum dot is prepared as:Using graphite as work electricity
Pole and to electrode in the case where decomposition voltage is 40v, is electrolysed 120h, centrifugation takes supernatant liquor, dry, obtains using water as electrolyte
To carbon quantum dot.
A kind of application of the composite photo-catalyst of the monatomic-C quantum dots of Pt in photodissociation prepares hydrogen.
Technical solution of the present invention has the following advantages that：
1. the present invention provides a kind of composite photo-catalysts of the monatomic-C quantum dots of Pt, on the one hand, by by Pt with list
The form load of atom is on the titanium dioxide so that titanium dioxide forms a large amount of hetero-junctions with Pt, greatly inhibits photoproduction electricity
Son is compound with hole, improves the catalytic capability of composite photo-catalyst；On the other hand, carbon quantum is added, Pt/ can be efficiently separated
The photogenerated charge of titanium dioxide surface generates synergistic enhancing effect with Pt collective effects, inhibits catalyst surface active point inactivation,
The catalytic life of composite photo-catalyst is greatly extended while the photocatalytic activity for improving titanium dioxide.
2. the present invention provides a kind of composite photo-catalyst of the monatomic-C quantum dots of Pt, carbon quantum on titanium dioxide is limited
The load capacity of point is 0.2wt%-2wt%, not only can effectively extend the service life of composite photo-catalyst, but also can be effective
Avoid reunite between carbon quantum.
3. the present invention provides a kind of composite photo-catalyst of the monatomic-C quantum dots of Pt, the titanium dioxide is limited as list
Crystal structure, and limit titanium dioxide (001) face area summation as the 30%- of the crystal surface area of the titanium dioxide
70%, (101) and (001) crystal face hetero-junctions of this ratio there are the quick separating of advantageous photo-generated carrier, monatomic Pt pairs
The hetero-junctions plays the role of reinforcement, further improves the catalytic effect of photochemical catalyst.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1-Fig. 2 is the high angle annular dark field scanning transmission electronic display of the monatomic catalyst A of Pt prepared in embodiment 1
Image under micro mirror.
Fig. 3-Fig. 4 is the monatomic catalyst Electronic Speculum of Pt that embodiment 1 is the monatomic catalyst A of Pt prepared in embodiment 1
Scanning figure.
Fig. 5 is characterization image of the C quantum dots under transmission electron microscope in composite photo-catalyst prepared by embodiment 6.
Specific implementation mode
Technical scheme of the present invention will be clearly and completely described below, it is clear that described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
There is the every other embodiment obtained under the premise of making creative work, shall fall within the protection scope of the present invention.
Embodiment 1
(1) by 2mL TiCl4It is added drop-wise in 60mL ethylene glycol, stirs 30min in the case where rotating speed is 300r/min, be added dropwise later
The HF solution that 0.79mL volumetric concentrations are 40%；Mixed liquor is moved into the water heating kettle of polytetrafluoroethyllining lining, controls hydro-thermal temperature
200 DEG C of degree, hydro-thermal time for 24 hours, obtain white suspension, and centrifugation, drying obtain monocrystal TiO2；Monocrystal TiO2(001)
The area of crystal face is monocrystal TiO2The 40% of crystalline areas；
(2) TiO for taking 78mg steps (1) to be prepared2Monocrystal is mixed with 100mL deionized waters, ultrasonic 20min；
Under conditions of dark and stirring, the platinum acid chloride solution of 0.6mL 4mM is added dropwise, later in UV illumination 15min, centrifugal drying,
The monatomic catalyst A of Pt are obtained, Pt is with monoatomic formal distribution in TiO2Point of surface (as illustrated in fig. 1 and 2) and selectivity
Cloth is on (101) crystal face (as shown in Figures 3 and 4)；
(3) using graphite as working electrode and to electrode, using water as electrolyte, in the case where decomposition voltage is 40v, electrolysis
120h, centrifugation, takes supernatant liquor, dry at 100 DEG C, obtains C quantum dots；
The monatomic catalyst A of Pt prepared by 100mg steps (2) and 2mg C quantum dots are taken, it is mixed that ultrasound in deionized water is added
After even 20min, 12h is roasted at vacuum condition and 120 DEG C, obtains composite photo-catalyst A；
In composite photo-catalyst A, the content of Pt is the 0.6wt.% of composite photo-catalyst A mass, and the content of C quantum dots is
The 2wt.% of composite photo-catalyst A mass.
Embodiment 2
(1) by 2mL TiCl4It is added drop-wise in 60mL ethylene glycol, stirs 30min in the case where rotating speed is 300r/min, be added dropwise later
The HF solution that 0.79mL volumetric concentrations are 40%；Mixed liquor is moved into the water heating kettle of polytetrafluoroethyllining lining, controls hydro-thermal temperature
180 DEG C, hydro-thermal time 18h of degree, obtains white suspension, and centrifugation, drying obtain TiO2Monocrystal；
(2) TiO for taking 78mg steps (1) to be prepared2Monocrystal is mixed with 100mL deionized waters, ultrasonic 20min；
Under conditions of dark and stirring, the platinum acid chloride solution of 0.3mL 4mM is added dropwise, later in UV illumination 15min, centrifugal drying,
The monatomic catalyst B of Pt are obtained, Pt is with monoatomic formal distribution in TiO2Surface, and selectivity be distributed in (101) crystal face
On；
(3) using graphite as working electrode and to electrode, using deionized water as electrolyte, in the case where decomposition voltage is 40v, electricity
120h is solved, centrifugation takes supernatant liquor, is freeze-dried, obtains C quantum dots；
The monatomic catalyst B of Pt prepared by 100mg steps (2) and 2mg C quantum dots are taken, it is mixed that ultrasound in deionized water is added
After even 20min, 12h is roasted at vacuum condition and 120 DEG C, obtains composite photo-catalyst B；
In composite photo-catalyst B, the content of Pt is the 0.3wt.% of composite photo-catalyst B mass, and the content of C quantum dots is
The 2wt.% of composite photo-catalyst B mass.
Embodiment 3
(1) by 2mL TiCl4It is added drop-wise in 60mL ethylene glycol, stirs 30min in the case where rotating speed is 300r/min, be added dropwise later
The HF solution that 0.79mL volumetric concentrations are 40%；Mixed liquor is moved into the water heating kettle of polytetrafluoroethyllining lining, controls hydro-thermal temperature
200 DEG C of degree, hydro-thermal time for 24 hours, obtain white suspension, and centrifugation, drying obtain TiO2Monocrystal；
(2) TiO for taking 78mg steps (1) to be prepared2Monocrystal is mixed with 100mL deionized waters, ultrasonic 20min；
Under conditions of dark and stirring, the platinum acid chloride solution of 0.9mL 4mM is added dropwise, later in UV illumination 15min, centrifugal drying,
The monatomic catalyst B of Pt are obtained, Pt is with monoatomic formal distribution in TiO2Surface, and selectivity be distributed in (101) crystal face
On；
(3) using graphite as working electrode and to electrode, using water as electrolyte, in the case where decomposition voltage is 40v, electrolysis
120h, centrifugation, takes supernatant liquor, is freeze-dried, obtains C quantum dots；
The monatomic catalyst C of Pt prepared by 100mg steps (2) and 2mg C quantum dots are taken, it is mixed that ultrasound in deionized water is added
After even 20min, is roasted for 24 hours at vacuum condition and 160 DEG C, obtain composite photo-catalyst C；
In composite photo-catalyst C, the content of Pt is the 0.9wt.% of composite photo-catalyst C mass, and the content of C quantum dots is
The 2wt.% of composite photo-catalyst C mass.
Embodiment 4
Using graphite as working electrode and to electrode, using water as electrolyte, in the case where decomposition voltage is 40v, it is electrolysed 120h, from
The heart takes supernatant liquor, is being freeze-dried, and obtains C quantum dots；
The monatomic catalyst A of Pt prepared by 100mg embodiments 1 and 1mg C quantum dots are taken, it is mixed that ultrasound in deionized water is added
After even 20min, 12h is roasted at vacuum condition and 120 DEG C, obtains composite photo-catalyst D；
In composite photo-catalyst D, the content of Pt is the 0.6wt.% of composite photo-catalyst D mass, and the content of C quantum dots is
The 1wt.% of composite photo-catalyst D mass.
Embodiment 5
Using graphite as working electrode and to electrode, using water as electrolyte, in the case where decomposition voltage is 40v, it is electrolysed 120h, from
The heart takes supernatant liquor, is being freeze-dried, and obtains C quantum dots；
The monatomic catalyst A of Pt prepared by 100mg embodiments 1 and 0.5mg C quantum dots are taken, ultrasound in deionized water is added
After mixing 20min, 12h is roasted at vacuum condition and 120 DEG C, obtains composite photo-catalyst E；
In composite photo-catalyst E, the content of Pt is the 0.6wt.% of composite photo-catalyst E mass, and the content of C quantum dots is
The 0.5wt.% of composite photo-catalyst E mass.
Embodiment 6
(1) by 2mL TiCl4It is added drop-wise in 60mL ethylene glycol, stirs 30min in the case where rotating speed is 300r/min, be added dropwise later
The HF solution that 2mL volumetric concentrations are 50%；Mixed liquor is moved into the water heating kettle of polytetrafluoroethyllining lining, controls hydrothermal temperature
180 DEG C, hydro-thermal time 18h, white suspension is obtained, centrifugation, drying obtain TiO2Monocrystal；Monocrystal TiO2(001) it is brilliant
The area in face is monocrystal TiO2The 70% of crystalline areas；
(2) TiO for taking 78mg steps (1) to be prepared2Monocrystal is mixed with 100mL deionized waters, ultrasonic 20min；
Under conditions of dark and stirring, the platinum acid chloride solution of 0.6mL 4mM is added dropwise, later in UV illumination 15min, centrifugal drying,
Obtain the monatomic catalyst F of Pt；
(3) using graphite as working electrode and to electrode, using water as electrolyte, in the case where decomposition voltage is 40v, electrolysis
120h, centrifugation, takes supernatant liquor, is being freeze-dried, obtain C quantum dots；
The monatomic catalyst F of Pt prepared by 100mg steps (2) and 0.2mg C quantum dots are taken, ultrasound in deionized water is added
After mixing 20min, is roasted for 24 hours at vacuum condition and 160 DEG C, obtain composite photo-catalyst F；
In composite photo-catalyst F, the content of Pt is the 0.6wt% of composite photo-catalyst F mass, and the content of C quantum dots is
The 0.2wt% of composite photo-catalyst F mass.
Embodiment 7
(1) by 2mL TiCl4It is added drop-wise in 60mL ethylene glycol, stirs 30min in the case where rotating speed is 300r/min, be added dropwise later
The HF solution that 0.5mL volumetric concentrations are 50%；Mixed liquor is moved into the water heating kettle of polytetrafluoroethyllining lining, controls hydrothermal temperature
180 DEG C, hydro-thermal time 18h, white suspension is obtained, centrifugation, drying obtain TiO2Monocrystal；Monocrystal TiO2(001) it is brilliant
The area in face is monocrystal TiO2The 30% of crystalline areas；
(2) TiO for taking 78mg steps (1) to be prepared2Monocrystal is mixed with 100mL deionized waters, ultrasonic 20min；
Under conditions of dark and stirring, the platinum acid chloride solution of 0.1mL 4mM is added dropwise, later in UV illumination 15min, centrifugal drying,
Obtain the monatomic catalyst G of Pt；
(3) using graphite as working electrode and to electrode, using water as electrolyte, in the case where decomposition voltage is 40v, electrolysis
120h, centrifugation, takes supernatant liquor, is being freeze-dried, obtain C quantum dots；
The monatomic catalyst G of Pt prepared by 100mg steps (2) and 1mg C quantum dots are taken, it is mixed that ultrasound in deionized water is added
After even 20min, is roasted for 24 hours at vacuum condition and 160 DEG C, obtain composite photo-catalyst G；
In composite photo-catalyst G, the content of Pt is the 0.1wt% of composite photo-catalyst G mass, and the content of C quantum dots is
The 1wt% of composite photo-catalyst G mass.
Embodiment 8
C quantum dots in the present embodiment are bought from Nanjing Jie Na new materials Co., Ltd, CDs oil phases, article No. CD-
12-430；
The monatomic catalyst A of Pt prepared by 100mg embodiments 1 and 1mg C quantum dots are taken, it is mixed that ultrasound in deionized water is added
After even 20min, 12h is roasted at vacuum condition and 120 DEG C, obtains composite photo-catalyst H；
In composite photo-catalyst H, the content of Pt is the 0.6wt.% of composite photo-catalyst H mass, and the content of C quantum dots is
The 1wt.% of composite photo-catalyst H mass.
Compliance test result
1. structure detection：
The Pt monatomic catalyst A, Fig. 1 and 2 prepared using Electron microscopy embodiment 1 is the monatomic catalyst of Pt
Characterization image under the high angle annular dark field scanning transmission electron microscope of A；White area is monocrystal titanium dioxide in figure
Crystal face, be monatomic Pt in circle.
Using the distribution of Pt elements on the monatomic catalyst A of Pt of the perspective Electronic Speculum inspection detection preparation of embodiment 1, shown in Fig. 3
The crystal structure of the monatomic catalyst A of Pt is shown, it can be seen that the titanium dioxide of preparation is monocrystal, and Fig. 4, which is that Pt is monatomic, to be urged
The distribution map of Pt elements on agent A, white point is Pt elements in Fig. 4, and Pt on monocrystal is shown in Fig. 3 in box in Fig. 4 boxes
The distribution of element, it can thus be seen that Pt Elemental redistributions are in monocrystal dioxy on the monatomic catalyst A of Pt prepared by embodiment 1
On (101) crystal face for changing titanium.
The composite photo-catalyst being prepared using transmission electron microscope detection embodiment 6, from figure 5 it can be seen that C
Quantum dot is supported on monocrystal titanium dioxide.
2. composite photo-catalyst A-E catalytic capabilities detection prepared by couple embodiment 1-5, testing result are shown in Table 1.
Detection method：
10mg composite photo-catalysts are taken, photolysis water hydrogen gas (using 20% methanol as sacrifice agent) under 300W xenon lamps uses
The hydrogen output that is averaged per hour of 2h- 4h after gas-chromatography GC detecting systems are stablized.
Table 1
3. Pt prepared by the catalytic life and embodiment 1-3 of composite photo-catalyst A-C prepared by couple embodiment 1-3 is mono-
The catalytic life of catalyst atom A-C is detected, and testing result is shown in Table 2.
Detection method：
10mg composite photo-catalysts or the monatomic catalyst of Pt are taken, photolysis water hydrogen gas is (with 20% first under 300W xenon lamps
Alcohol is sacrifice agent), the average hydrogen output hourly of 38h- 40h after being stablized using gas-chromatography GC detecting systems.
Hydrogen output rate of descent (%)=[(2h- 4h) hydrogen output-(38h- 40h) produces hydrogen per hour per hour
Amount]/(2h- 4h) hydrogen output per hour
Table 2
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of composite photo-catalyst of the monatomic-C quantum dots of Pt, including：Titanium dioxide and institute is supported on monatomic form
State the Pt on titanium dioxide, which is characterized in that be also loaded carbon quantum dot on the titanium dioxide.
2. composite photo-catalyst according to claim 1, which is characterized in that in the composite photo-catalyst, the carbon amounts
The amount of son point is the 0.2wt%-2wt% of the quality of the composite photo-catalyst.
3. composite photo-catalyst according to claim 1 or 2, which is characterized in that the titanium dioxide is monocrystal；
The area summation of (001) crystal face of the titanium dioxide is the 30%-70% of the crystalline areas of the titanium dioxide.
4. according to any composite photo-catalysts of claim 1-3, which is characterized in that the Pt is loaded with monatomic form
On (101) crystal face of the titanium dioxide.
5. according to any composite photo-catalysts of claim 1-4, which is characterized in that in the composite photo-catalyst, institute
The amount for stating Pt is the 0.1wt%-0.9wt% of the composite photo-catalyst quality.
6. a kind of method preparing any composite photo-catalysts of claim 1-5, includes the following steps：
Pt is loaded into Pt/TiO on the titanium dioxide with monatomic form2Monatomic catalyst, carbon quantum dot and deionized water are mixed
It closes, ultrasound, vacuum-sintering obtains the monatomic catalyst of C quantum dots-Pt；
120-160 DEG C of the temperature of vacuum-sintering, time 12-24h.
7. preparation method according to claim 6, which is characterized in that further include：
(1) titanium tetrachloride, ethylene glycol and acid solution are mixed, hydro-thermal obtains monocrystal titanium dioxide；
(2) the monocrystal titanium dioxide that step (1) is prepared is mixed with deionized water, platinum salt solution is then added, it is ultraviolet
Light irradiates, and centrifuges, dry, obtains the Pt/TiO2Monatomic catalyst.
8. preparation method according to claim 7, which is characterized in that
The volume ratio of titanium tetrachloride, ethylene glycol and acid solution is 2:60:(0.39-0.79)；The volumetric concentration of the acid solution is
40%-50%；
The temperature of hydro-thermal is 180-200 DEG C, the time 18-24h of hydro-thermal.
9. preparation method according to claim 7, which is characterized in that further include：The carbon quantum dot is prepared as:With stone
Ink is for working electrode and to electrode, using water as electrolyte, in the case where decomposition voltage is 40v, is electrolysed 120h, centrifugation takes upper layer clear
Liquid, it is dry, obtain carbon quantum dot.
10. a kind of any composite photo-catalysts and any preparations of claim 6-9 of claim 1-5 is described compound
Application of the photochemical catalyst in photodissociation prepares hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810213580.0A CN108479766B (en) | 2018-03-15 | 2018-03-15 | Composite photocatalyst of Pt monatomic-C quantum dots, preparation and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810213580.0A CN108479766B (en) | 2018-03-15 | 2018-03-15 | Composite photocatalyst of Pt monatomic-C quantum dots, preparation and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108479766A true CN108479766A (en) | 2018-09-04 |
| CN108479766B CN108479766B (en) | 2021-07-27 |
Family
ID=63339455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810213580.0A Active CN108479766B (en) | 2018-03-15 | 2018-03-15 | Composite photocatalyst of Pt monatomic-C quantum dots, preparation and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108479766B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331816A (en) * | 2018-11-06 | 2019-02-15 | 郑州大学 | A kind of preparation method of metal/oxide hybridized nanometer system photochemical catalyst |
| CN110918095A (en) * | 2019-11-12 | 2020-03-27 | 华南师范大学 | Carbon/titanium dioxide/noble metal composite material, photocatalyst and preparation method thereof |
| CN111482169A (en) * | 2020-04-14 | 2020-08-04 | 中北大学 | Noble metal-loaded nano photocatalyst and preparation method and application thereof |
| CN112403460A (en) * | 2019-08-23 | 2021-02-26 | 中国科学院大连化学物理研究所 | Platinum catalyst based on metal-carrier strong interaction and preparation and application thereof |
| CN112569929A (en) * | 2019-09-30 | 2021-03-30 | 中国石油化工股份有限公司 | Nano carbon-based material and preparation method thereof and catalytic oxidation method of cycloparaffin |
| CN112742366A (en) * | 2019-10-29 | 2021-05-04 | 中国石油化工股份有限公司 | Nano carbon-based material and preparation method thereof and catalytic oxidation method of cycloparaffin |
| CN112973750A (en) * | 2021-01-29 | 2021-06-18 | 南京工业大学 | Carbon quantum dot coated metal monoatomic-carbon nitride composite material and preparation method thereof |
| CN114959792A (en) * | 2022-05-30 | 2022-08-30 | 北京化工大学 | Preparation method of monatomic Pt catalyst and hydrogen evolution application thereof |
| CN115920927A (en) * | 2023-01-05 | 2023-04-07 | 成都川纳科技有限公司 | Ruthenium monoatomic catalyst with active oxygen scavenging action and preparation thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127431A (en) * | 2010-12-24 | 2011-07-20 | 苏州方昇光电装备技术有限公司 | Manufacturing method of carbon quantum dots and method for preparing photocatalyst by using same |
| CN102500363A (en) * | 2011-03-10 | 2012-06-20 | 中国科学院福建物质结构研究所 | Noble metal orientation load titanium dioxide photocatalyst and preparation method thereof |
| CN103861620A (en) * | 2014-03-07 | 2014-06-18 | 武汉理工大学 | Carbon quantum dot, precious metal and zinc indium sulfide composite photocatalyst and preparation method thereof |
| US20150069295A1 (en) * | 2013-09-09 | 2015-03-12 | National University Of Singapore | Hydrogel nanocomposite |
-
2018
- 2018-03-15 CN CN201810213580.0A patent/CN108479766B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127431A (en) * | 2010-12-24 | 2011-07-20 | 苏州方昇光电装备技术有限公司 | Manufacturing method of carbon quantum dots and method for preparing photocatalyst by using same |
| CN102500363A (en) * | 2011-03-10 | 2012-06-20 | 中国科学院福建物质结构研究所 | Noble metal orientation load titanium dioxide photocatalyst and preparation method thereof |
| US20150069295A1 (en) * | 2013-09-09 | 2015-03-12 | National University Of Singapore | Hydrogel nanocomposite |
| CN103861620A (en) * | 2014-03-07 | 2014-06-18 | 武汉理工大学 | Carbon quantum dot, precious metal and zinc indium sulfide composite photocatalyst and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| QIN LI等: "Visible-Light Photocatalytic Hydrogen Production Activity of ZnIn2S4 Microspheres Using Carbon Quantum Dots and Platinum as Dual Cocatalysts", 《CHEM. ASIAN J.》 * |
| YULEI SUI等: "Atomically dispersed Pt on specific TiO2 facets for photocatalytic H2 Evolution", 《JOURNAL OF CATALYSIS》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331816A (en) * | 2018-11-06 | 2019-02-15 | 郑州大学 | A kind of preparation method of metal/oxide hybridized nanometer system photochemical catalyst |
| CN109331816B (en) * | 2018-11-06 | 2021-09-21 | 郑州大学 | Preparation method of metal/oxide hybrid nano-system photocatalyst |
| CN112403460B (en) * | 2019-08-23 | 2022-05-06 | 中国科学院大连化学物理研究所 | Platinum catalyst based on metal-carrier strong interaction and preparation and application thereof |
| CN112403460A (en) * | 2019-08-23 | 2021-02-26 | 中国科学院大连化学物理研究所 | Platinum catalyst based on metal-carrier strong interaction and preparation and application thereof |
| CN112569929A (en) * | 2019-09-30 | 2021-03-30 | 中国石油化工股份有限公司 | Nano carbon-based material and preparation method thereof and catalytic oxidation method of cycloparaffin |
| CN112569929B (en) * | 2019-09-30 | 2023-05-05 | 中国石油化工股份有限公司 | Nanocarbon-based material, method for preparing same, and catalytic oxidation method for cycloalkane |
| CN112742366A (en) * | 2019-10-29 | 2021-05-04 | 中国石油化工股份有限公司 | Nano carbon-based material and preparation method thereof and catalytic oxidation method of cycloparaffin |
| CN112742366B (en) * | 2019-10-29 | 2023-06-09 | 中国石油化工股份有限公司 | Nanocarbon-based material, method for preparing same, and catalytic oxidation method for cycloalkane |
| CN110918095A (en) * | 2019-11-12 | 2020-03-27 | 华南师范大学 | Carbon/titanium dioxide/noble metal composite material, photocatalyst and preparation method thereof |
| CN111482169A (en) * | 2020-04-14 | 2020-08-04 | 中北大学 | Noble metal-loaded nano photocatalyst and preparation method and application thereof |
| CN111482169B (en) * | 2020-04-14 | 2023-04-18 | 中北大学 | Noble metal-loaded nano photocatalyst and preparation method and application thereof |
| CN112973750A (en) * | 2021-01-29 | 2021-06-18 | 南京工业大学 | Carbon quantum dot coated metal monoatomic-carbon nitride composite material and preparation method thereof |
| CN112973750B (en) * | 2021-01-29 | 2023-09-26 | 南京工业大学 | Carbon quantum dot coated metal monoatomic-carbon nitride composite material and preparation method thereof |
| CN114959792A (en) * | 2022-05-30 | 2022-08-30 | 北京化工大学 | Preparation method of monatomic Pt catalyst and hydrogen evolution application thereof |
| CN114959792B (en) * | 2022-05-30 | 2023-08-29 | 北京化工大学 | Preparation method and hydrogen evolution application of monoatomic Pt catalyst |
| CN115920927A (en) * | 2023-01-05 | 2023-04-07 | 成都川纳科技有限公司 | Ruthenium monoatomic catalyst with active oxygen scavenging action and preparation thereof |
| CN115920927B (en) * | 2023-01-05 | 2023-12-15 | 成都川纳科技有限公司 | Ruthenium monoatomic catalyst with active oxygen scavenging effect and preparation thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108479766B (en) | 2021-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108479766A (en) | It a kind of composite photo-catalyst of the monatomic-C quantum dots of Pt and prepares and application | |
| Ning et al. | Photocorrosion inhibition of CdS-based catalysts for photocatalytic overall water splitting | |
| Wu et al. | Noble-metal-free nickel phosphide modified CdS/C 3 N 4 nanorods for dramatically enhanced photocatalytic hydrogen evolution under visible light irradiation | |
| Fang et al. | Novel dodecahedron BiVO4: YVO4 solid solution with enhanced charge separation on adjacent exposed facets for highly efficient overall water splitting | |
| Dang et al. | Efficient visible-light activation of molecular oxygen to produce hydrogen peroxide using P doped gC 3 N 4 hollow spheres | |
| Katsumata et al. | Z-scheme photocatalytic hydrogen production over WO 3/gC 3 N 4 composite photocatalysts | |
| Hou et al. | Efficient visible-light-driven photocatalytic hydrogen production using CdS@ TaON core–shell composites coupled with graphene oxide nanosheets | |
| Wang et al. | Enhanced photocatalytic hydrogen evolution by prolonging the lifetime of carriers in ZnO/CdS heterostructures | |
| Chen et al. | Magnesia interface nanolayer modification of Pt/Ta3N5 for promoted photocatalytic hydrogen production under visible light irradiation | |
| Sakamoto et al. | Highly dispersed noble-metal/chromia (core/shell) nanoparticles as efficient hydrogen evolution promoters for photocatalytic overall water splitting under visible light | |
| CN109967104B (en) | Nano Ru modified TiO2-Ti3C2Photocatalyst and preparation method thereof | |
| Xie et al. | Boron oxynitride nanoclusters on tungsten trioxide as a metal-free cocatalyst for photocatalytic oxygen evolution from water splitting | |
| CN102963934B (en) | Preparation method of bismuth tungstate quantum dot and preparation method of bismuth tungstate quantum dot-graphene composite material | |
| CN110327920A (en) | A kind of monatomic catalyst and its preparation method and application | |
| Hu et al. | Novel heterojunction photocatalysts based on lanthanum titanate nanosheets and indium oxide nanoparticles with enhanced photocatalytic hydrogen production activity | |
| CN105536839B (en) | One kind prepares WO3/g‑C3N4The method of composite photocatalyst material | |
| Zhang et al. | Cu (OH) 2-modified TiO2 nanotube arrays for efficient photocatalytic hydrogen production | |
| CN105964286A (en) | Nitrogen-doped graphene quantum dot and graphite-phase carbon nitride composite photocatalyst and preparation method thereof | |
| CN108786792B (en) | Metal/semiconductor composite photocatalyst and preparation and application thereof | |
| Li et al. | Carbohydrate-regulated synthesis of ultrathin porous nitrogen-vacancy polymeric carbon nitride for highly efficient Visible-light hydrogen evolution | |
| Babaei et al. | Effect of duty cycle and electrolyte additive on photocatalytic performance of TiO2-ZrO2 composite layers prepared on CP Ti by micro arc oxidation method | |
| CN109821562B (en) | MoP-Zn3In2S6Preparation method of composite nano material | |
| Madi et al. | 2D/2D V2C mediated porous g-C3N4 heterojunction with the role of monolayer/multilayer MAX/MXene structures for stimulating photocatalytic CO2 reduction to fuels | |
| Parida et al. | Facile fabrication of hierarchical N-doped GaZn mixed oxides for water splitting reactions | |
| Wang et al. | Hollow core–shell Co 9 S 8@ In 2 S 3 nanotube heterojunctions toward optimized photothermal–photocatalytic performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |