CN103242687A - Nanometer photocatalyst spray-coating agent and preparation method thereof - Google Patents
Nanometer photocatalyst spray-coating agent and preparation method thereof Download PDFInfo
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- CN103242687A CN103242687A CN2013101608787A CN201310160878A CN103242687A CN 103242687 A CN103242687 A CN 103242687A CN 2013101608787 A CN2013101608787 A CN 2013101608787A CN 201310160878 A CN201310160878 A CN 201310160878A CN 103242687 A CN103242687 A CN 103242687A
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- 238000005507 spraying Methods 0.000 title claims abstract description 30
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000011248 coating agent Substances 0.000 title abstract 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002270 dispersing agent Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- 239000006185 dispersion Substances 0.000 claims description 29
- 230000001699 photocatalysis Effects 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 14
- 229920001817 Agar Polymers 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 8
- 229920002472 Starch Polymers 0.000 claims description 8
- 239000008272 agar Substances 0.000 claims description 8
- 235000010419 agar Nutrition 0.000 claims description 8
- LCRMGUFGEDUSOG-UHFFFAOYSA-N naphthalen-1-ylsulfonyloxymethyl naphthalene-1-sulfonate;sodium Chemical group [Na].C1=CC=C2C(S(=O)(OCOS(=O)(=O)C=3C4=CC=CC=C4C=CC=3)=O)=CC=CC2=C1 LCRMGUFGEDUSOG-UHFFFAOYSA-N 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 8
- 239000008107 starch Substances 0.000 claims description 8
- 235000019698 starch Nutrition 0.000 claims description 8
- 229920000084 Gum arabic Polymers 0.000 claims description 7
- 241000978776 Senegalia senegal Species 0.000 claims description 7
- 229920001800 Shellac Polymers 0.000 claims description 7
- 239000000205 acacia gum Substances 0.000 claims description 7
- 235000010489 acacia gum Nutrition 0.000 claims description 7
- 239000004208 shellac Substances 0.000 claims description 7
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 claims description 7
- 229940113147 shellac Drugs 0.000 claims description 7
- 235000013874 shellac Nutrition 0.000 claims description 7
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 2
- 239000003643 water by type Substances 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 abstract description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- 238000003915 air pollution Methods 0.000 abstract 1
- 230000036632 reaction speed Effects 0.000 abstract 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 27
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 18
- 229910021529 ammonia Inorganic materials 0.000 description 9
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- -1 hydroxyl free radical Chemical class 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000652 hormesis Toxicity 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention provides a nanometer photocatalyst spray-coating agent and a preparation method thereof. The nanometer photocatalyst spray-coating agent solves the problems of limited illumination condition and low reaction speed of the traditional method for curbing environmental pollution through a photocatalyst. The nanometer photocatalyst spray-coating agent comprises the following components in parts by weight: 0.6-1.5 parts of nanometer TiO2 photocatalysts, 0.01-0.05 part of film-forming agents, 0.2-1.0 part of stable dispersing agents and 100 parts of deionized water. The invention discloses the preparation method of the nanometer photocatalyst spray-coating agent. The nanometer photocatalyst spray-coating agent prepared through the method provided by the invention has highest ight utilization ratio in the industry, can be used for catalyzing nanometer photocatalysts through light with wavelength being less than 600 nanometers and has the advantages of high efficiency and safety in air pollution control and wide application range.
Description
Technical field
The present invention relates to environment environmental pollution improvement field, particularly a kind of nano photo-catalytic spraying agent and preparation method thereof.
Background technology
The method of much curbing environmental pollution is arranged in the market, wherein, photocatalyst improvement method refers to: after the ultraviolet ray of photocatalyst in absorbing sunlight or lighting source, redox reaction takes place under the exciting of ultraviolet energy, the light ability catalysis that ordinary light catalyst palpus 388 nano wave lengths are following, the surface forms hydroxyl free radical and the ultra-oxygen anion free radical of strong oxidizing property, objectionable impurities and microbiological degradation free in the air are become harmless carbonic acid gas and water, thus reach purify air, purposes such as sterilization, deodorizing.But, photocatalyst is subjected to the restriction of illumination condition, speed of response is relatively slow, the production cost height, market value is relatively expensive, and photocatalyst is as a kind of passive depollution mode, and the speed of the hydroxyl of its generation and negative oxygen ion degradation of contaminant just can play effect only greater than pollutent self evaporation rate the time, human body is also simultaneously at absorb polluted matter, and is harmful equally to HUMAN HEALTH.For reunion (the back particle diameter increase of reuniting of controlling the photocatalyst particle, regulation effect reduces) and the increase photocatalyst by the sticking power on spray surface, photocatalyst has on the market added tamanori mostly at present, and these tamanoris are organism mostly, influence the specific surface area of photocatalyst on the one hand, influence degradation efficiency, on the other hand, these dispersion agents and tamanori can bring some secondary pollutions, and the people is had certain hormesis.
Summary of the invention
The invention provides a kind of nano photo-catalytic spraying agent and preparation method thereof, solving has photocatalyst restricted, the problem of slow response of method illumination condition of curbing environmental pollution.
Technical scheme of the present invention is achieved in that a kind of nano photo-catalytic spraying agent, is made up of following parts by weight of component: nano-TiO
2100 parts of 0.6～1.5 part of photocatalyst, 0.01～0.05 part of membrane-forming agent, 0.2～1.0 part of stable dispersant and deionized waters.
Wherein, preferably, described membrane-forming agent is any one or a few of shellac, gum arabic, agar, starch, polyvinyl alcohol.
Wherein, preferably, described stable dispersant is sodium methylene bis-naphthalene sulfonate.
Prepare described nano photo-catalytic spraying agent method, may further comprise the steps:
(1) stable dispersant with the 0.2-1.0 weight part is scattered in the deionized water of 100 weight parts, stirs to mix evenly, is made into stable aqueous dispersions;
(2) with the nano-TiO of 0.6～1.5 weight part
2Photocatalyst joins in the aqueous dispersions that step (1) is made into, and stirs evenly mixedly, is made into the water nano dispersion fluid;
(3) membrane-forming agent of 0.01～0.05 weight part is added in the water nano dispersion fluid that step (2) is made into, stir evenly mixed, namely.
Wherein, preferably, described membrane-forming agent is any one or a few of shellac, gum arabic, agar, starch, polyvinyl alcohol.
Wherein, preferably, described stable dispersant is sodium methylene bis-naphthalene sulfonate.
When the Nano titanium dioxide ultramicron is accepted uviolizing, it is inner owing to absorption luminous energy excites the generation electron-hole pair, it is photo-generated carrier, move to its surface then rapidly and activate oxygen and the moisture that is adsorbed, produce active free hydroxy (OH) and active oxygen (O), when pollutent and bacterium were adsorbed its surface, the chain type DeR will take place.
The present invention possesses following beneficial effect:
1. the nano photo-catalytic spraying agent of the present invention preparation the highest light utilization efficiency in the industry, the light of the following wavelength of 600 nanometers all can carry out catalysis (the light ability catalysis that ordinary light catalyst palpus 388 nano wave lengths are following) to nano photo-catalytic, and effectiveness can take place under sunlight and the common fluorescent lamp;
2. the present invention has solved reunion and sticking power problem well, does not add particle diameter and viscous force (sticking power is 0 grade of highest level) that tamanori also can keep the photocatalyst particle, simultaneously, because do not contain tamanori, the people is not had any detrimentally affect.
3. high efficiency: outstanding degraded atmospheric pollution ability, hazardous and noxious substances such as formaldehyde, benzene, ammonia, TVOC thoroughly can be decomposed, have germicidal action simultaneously, comprise streptococcus aureus, Cray Bai Shi pneumobacillus, black-koji mould etc.
4. security: use state-of-the-art photocatalysis technology to decompose hazardous and noxious substances, final product is carbonic acid gas and water.
5. applied range: can be widely used in products such as conditioner, air cleaner, mansion purification system, automobile purification system, warming machine, be that numerous manufacturing firms and engineering merchant's ideal is selected.
Description of drawings
Fig. 1 nano photo-catalytic spraying agent of the present invention preparation method process flow sheet.
Embodiment
As shown in Figure 1, preparation nano photo-catalytic spraying agent may further comprise the steps:
(1) stable dispersant with the 0.2-1.0 weight part is scattered in the deionized water of 100 weight parts, stirs to mix evenly, is made into stable aqueous dispersions;
(2) with the nano-TiO of 0.6～1.5 weight part
2Photocatalyst joins in the aqueous dispersions that step (1) is made into, and stirs evenly mixedly, is made into the water nano dispersion fluid;
(3) membrane-forming agent of 0.01～0.05 weight part is added in the water nano dispersion fluid that step (2) is made into, stir evenly mixed, namely.
Further specify the present invention below by embodiment, among the embodiment, the effect of nano photo-catalytic catalyzer of the present invention can detect by following concrete test below.
Test is at two 1.5m
3Test chamber in carry out, one is sample chamber, another is blank cabin.The nano photo-catalytic spraying agent is sprayed on 3 1m
2Paper substrate on, after first pass dries naturally, brush again second time, treat that sample dries naturally after, hang in the sample chamber.
Formaldehyde, benzene, ammonia and TVOC source of release are placed on respectively in two cabins, open fan, make source of release and cabin in air mixed even, tend to balance, close fan, its concentration of survey of sampling is starting point concentration.24 hours post-samplings are also measured the concentration value of formaldehyde, benzene, ammonia and TVOC in two cabins.
In the present invention, use State Standard of the People's Republic of China GB/T2761-2006 " indoor air purification product decontamination effect improving measuring method " as the standard of estimating formaldehyde, benzene, ammonia and TVOC concentration; Test set is QT-2 air sampler, 722S spectrophotometer and GC-4000A gas chromatograph.
The removal effect calculation formula:
In the formula: y-clearance, %;
CA-24 hour blank cabin Pollutant levels value, mg/m
3
CB-24 hour sample chamber Pollutant levels value, mg/m
3
Embodiment 1
As shown in Figure 1, preparation nano photo-catalytic spraying agent may further comprise the steps:
(1) stable dispersant with 1.0 weight parts is scattered in the deionized water of 100 weight parts, stirs to mix evenly, is made into stable aqueous dispersions;
(2) with the nano-TiO of 1.5 weight parts
2Photocatalyst joins in the aqueous dispersions that step (1) is made into, and stirs evenly mixedly, is made into the water nano dispersion fluid;
(3) membrane-forming agent of 0.05 weight part is added in the water nano dispersion fluid that step (2) is made into, stir evenly mixed, namely.
Wherein, membrane-forming agent by weight percentage, and is composed of the following components: shellac 20%, gum arabic 20%, agar 30%, starch 15%, polyvinyl alcohol 15%.
Wherein, stable dispersant is sodium methylene bis-naphthalene sulfonate.
Anti-(pressing down) the bacterium performance of the nano photo-catalytic spraying agent that present embodiment makes is remarkable, and the contrast clearance of 24 hours test formaldehyde, benzene, ammonia and TVOC is as shown in the table:
Embodiment 2
As shown in Figure 1, preparation nano photo-catalytic spraying agent may further comprise the steps:
(1) stable dispersant with 0.8 weight part is scattered in the deionized water of 100 weight parts, stirs to mix evenly, is made into stable aqueous dispersions;
(2) with the nano-TiO of 1.2 weight parts
2Photocatalyst joins in the aqueous dispersions that step (1) is made into, and stirs evenly mixedly, is made into the water nano dispersion fluid;
(3) membrane-forming agent of 0.04 weight part is added in the water nano dispersion fluid that step (2) is made into, stir evenly mixed, namely.
Wherein, membrane-forming agent by weight percentage, and is composed of the following components: shellac 30%, gum arabic 20%, agar 30%, starch 10%, polyvinyl alcohol 10%.
Wherein, stable dispersant is sodium methylene bis-naphthalene sulfonate.
Anti-(pressing down) the bacterium performance of the nano photo-catalytic spraying agent that present embodiment makes is remarkable, and the contrast clearance of 24 hours test formaldehyde, benzene, ammonia and TVOC is as shown in the table:
Embodiment 3
As shown in Figure 1, preparation nano photo-catalytic spraying agent may further comprise the steps:
(1) stable dispersant with 0.5 weight part is scattered in the deionized water of 100 weight parts, stirs to mix evenly, is made into stable aqueous dispersions;
(2) with the nano-TiO of 0.8 weight part
2Photocatalyst joins in the aqueous dispersions that step (1) is made into, and stirs evenly mixedly, is made into the water nano dispersion fluid;
(3) membrane-forming agent of 0.02 weight part is added in the water nano dispersion fluid that step (2) is made into, stir evenly mixed, namely.
Wherein, membrane-forming agent by weight percentage, gum arabic 40% composed of the following components, agar 30%, starch 15%, polyvinyl alcohol 15%.
Wherein, stable dispersant is sodium methylene bis-naphthalene sulfonate.
Anti-(pressing down) the bacterium performance of the nano photo-catalytic spraying agent that present embodiment makes is remarkable, and the contrast clearance of 24 hours test formaldehyde, benzene, ammonia and TVOC is as shown in the table:
Embodiment 4
As shown in Figure 1, preparation nano photo-catalytic spraying agent may further comprise the steps:
(1) stable dispersant with 0.2 weight part is scattered in the deionized water of 100 weight parts, stirs to mix evenly, is made into stable aqueous dispersions;
(2) with the nano-TiO of 0.6 weight part
2Photocatalyst joins in the aqueous dispersions that step (1) is made into, and stirs evenly mixedly, is made into the water nano dispersion fluid;
(3) membrane-forming agent of 0.1 weight part is added in the water nano dispersion fluid that step (2) is made into, stir evenly mixed, namely.
Wherein, membrane-forming agent by weight percentage, shellac 40% composed of the following components, agar 30%, starch 15%, polyvinyl alcohol 15%.
Wherein, stable dispersant is sodium methylene bis-naphthalene sulfonate.
Anti-(pressing down) the bacterium performance of the nano photo-catalytic spraying agent that present embodiment makes is remarkable, and the contrast clearance of 24 hours test formaldehyde, benzene, ammonia and TVOC is as shown in the table:
By above data as can be known, the nano photo-catalytic spraying agent of the present invention preparation toxic gases such as degradation of formaldehyde, benzene, ammonia, TVOC significantly.
Claims (6)
1. a nano photo-catalytic spraying agent is characterized in that, is made up of the component of following weight part: nano-TiO
2100 parts of 0.6～1.5 part of photocatalyst, 0.01～0.05 part of membrane-forming agent, 0.2～1.0 part of stable dispersant and deionized waters.
2. a kind of nano photo-catalytic spraying agent according to claim 1 is characterized in that: described membrane-forming agent is any one or a few of shellac, gum arabic, agar, starch, polyvinyl alcohol.
3. a kind of nano photo-catalytic spraying agent according to claim 1, it is characterized in that: described stable dispersant is sodium methylene bis-naphthalene sulfonate.
4. the described a kind of nano photo-catalytic spraying agent method of preparation claim 1 is characterized in that, may further comprise the steps:
(1) stable dispersant with the 0.2-1.0 weight part is scattered in the deionized water of 100 weight parts, stirs to mix evenly, is made into stable aqueous dispersions;
(2) with the nano-TiO of 0.6～1.5 weight part
2Photocatalyst joins in the aqueous dispersions that step (1) is made into, and stirs evenly mixedly, is made into the water nano dispersion fluid;
(3) membrane-forming agent of 0.01～0.05 weight part is added in the water nano dispersion fluid that step (2) is made into, stir evenly mixed, namely.
5. the method for preparing the nano photo-catalytic spraying agent according to claim 4 is characterized in that: described membrane-forming agent is any one or a few of shellac, gum arabic, agar, starch, polyvinyl alcohol.
6. the method for preparing the nano photo-catalytic spraying agent according to claim 4, it is characterized in that: described stable dispersant is sodium methylene bis-naphthalene sulfonate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106139891A (en) * | 2015-04-08 | 2016-11-23 | 江苏瑞丰科技实业有限公司 | VOC high-efficient purification spray in car |
| CN111893774A (en) * | 2020-07-14 | 2020-11-06 | 广州荔子科技有限公司 | Antibacterial ultraviolet-proof fabric spraying agent and preparation method thereof, and fabric and preparation method thereof |
| CN114100694A (en) * | 2021-11-22 | 2022-03-01 | 广西五行材料科技有限公司 | Preparation method of high-content photocatalyst |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106139891A (en) * | 2015-04-08 | 2016-11-23 | 江苏瑞丰科技实业有限公司 | VOC high-efficient purification spray in car |
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| CN114100694A (en) * | 2021-11-22 | 2022-03-01 | 广西五行材料科技有限公司 | Preparation method of high-content photocatalyst |
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