CN109286026B - Novel (membrane) electrode catalysis peroxymonosulfate auxiliary constructed photocatalytic fuel cell system - Google Patents
Novel (membrane) electrode catalysis peroxymonosulfate auxiliary constructed photocatalytic fuel cell system Download PDFInfo
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- 239000012528 membrane Substances 0.000 title claims abstract description 39
- FHHJDRFHHWUPDG-UHFFFAOYSA-L peroxysulfate(2-) Chemical compound [O-]OS([O-])(=O)=O FHHJDRFHHWUPDG-UHFFFAOYSA-L 0.000 title claims abstract description 37
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 31
- 239000000446 fuel Substances 0.000 title claims abstract description 26
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 15
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002134 carbon nanofiber Substances 0.000 claims abstract description 37
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011787 zinc oxide Substances 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 239000007772 electrode material Substances 0.000 claims abstract description 18
- 230000015556 catabolic process Effects 0.000 claims abstract description 17
- 238000006731 degradation reaction Methods 0.000 claims abstract description 17
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 16
- 239000010941 cobalt Substances 0.000 claims abstract description 16
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910021582 Cobalt(II) fluoride Inorganic materials 0.000 claims abstract description 15
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 15
- 239000002033 PVDF binder Substances 0.000 claims abstract description 14
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010406 cathode material Substances 0.000 claims abstract description 10
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 9
- 231100000719 pollutant Toxicity 0.000 claims abstract description 9
- 239000002073 nanorod Substances 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 7
- 150000002500 ions Chemical class 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000005286 illumination Methods 0.000 claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 238000004090 dissolution Methods 0.000 claims abstract description 5
- 238000010248 power generation Methods 0.000 claims abstract description 5
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Substances [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910001923 silver oxide Inorganic materials 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims description 15
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 14
- 239000004917 carbon fiber Substances 0.000 claims description 14
- 238000005273 aeration Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- -1 sulfate radical free radical Chemical class 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 6
- 230000002572 peristaltic effect Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000007146 photocatalysis Methods 0.000 claims description 3
- 150000003254 radicals Chemical class 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 2
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 238000007540 photo-reduction reaction Methods 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract 1
- 238000005374 membrane filtration Methods 0.000 abstract 1
- YBHILYKTIRIUTE-UHFFFAOYSA-N berberine Chemical compound C1=C2CC[N+]3=CC4=C(OC)C(OC)=CC=C4C=C3C2=CC2=C1OCO2 YBHILYKTIRIUTE-UHFFFAOYSA-N 0.000 description 7
- 229940093265 berberine Drugs 0.000 description 7
- QISXPYZVZJBNDM-UHFFFAOYSA-N berberine Natural products COc1ccc2C=C3N(Cc2c1OC)C=Cc4cc5OCOc5cc34 QISXPYZVZJBNDM-UHFFFAOYSA-N 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000010828 elution Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 229910002900 Bi2MoO6 Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(II,III) oxide Inorganic materials [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9075—Catalytic material supported on carriers, e.g. powder carriers
- H01M4/9083—Catalytic material supported on carriers, e.g. powder carriers on carbon or graphite
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
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- H01M4/90—Selection of catalytic material
- H01M4/9016—Oxides, hydroxides or oxygenated metallic salts
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/16—Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
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Abstract
The invention belongs to the technical field of environmental catalysis, water purification and energy recovery and utilization, and relates to a novel photocatalytic fuel cell system constructed by taking a silver/zinc oxide nanorod array/foamed nickel self-supporting electrode material as an anode and a cobalt ferrite/carbon nanofiber electrode or a cobalt ferrite/carbon nanofiber/PVDF membrane as a cathode. Cathode Co2+Sulfate radicals and singlet oxygen are generated by catalyzing peroxymonosulfate to assist in improving the degradation performance of the system; the carbon nano-fiber improves the conductivity and ORR performance of the material and improves the power generation effect of a PFC system. And CoF2O4The/carbon nanofiber/PVDF membrane cathode introduces the membrane filtration effect into a system to increase the contact of a catalytic material and a pollutant reaction, and the catalytic activity is increased. The self-bias of the system generates electrons to promote the active site Co in the cathode material2+The circulation in the system reduces the ion dissolution and improves the reutilization property of the electrode; high-efficiency pollutant degradation is realized under the conditions of existence and no illumination.
Description
Technical Field
The invention belongs to the technical field of environmental catalysis, water purification and energy recovery and utilization, and relates to a novel photocatalytic fuel cell system constructed by taking a silver/zinc oxide nanorod array/foamed nickel self-supporting electrode material as a photocatalytic anode and taking a cobalt ferrite/carbon nanofiber/carbon fiber cloth electrode or a cobalt ferrite/carbon nanofiber/PVDF membrane electrode as a cathode, in particular to photoelectrocatalysis and sulfate radical catalytic oxidation degradation.
Background
Because of the increasing severity of the environmental pollution problem, how to rapidly, efficiently and energy-efficiently realize the sewage treatment is a problem that researchers have been exploring. Based on sulfate radicals (SO)4 ·-) The treatment technology for oxidizing refractory organic pollutants is an advanced oxidation technology developed in recent years. The sulfate radical-based high-grade oxygen process has strong oxidizing capacity, good stability of the oxidant, multiple activation modes, wide pH application range and self-oxidation of sulfate radicalThe lifetime of the free radical (half-life of 4s) is longer than that of the hydroxyl radical (lifetime of less than 1 mus), which is beneficial to contact with pollutants and degradation. Research shows that Co2+The activated peroxymonosulfate system has high activity, researchers develop various cobalt-containing compounds which can efficiently activate peroxymonosulfate but commonly have Co2+Large elution amount, poor catalyst stability and the like, and limits the wide application of the catalyst. Therefore, it is urgently needed to develop an efficient, stable and recyclable active catalyst to construct an efficient peroxymonosulfate system.
Under the condition of illumination, a Photocatalytic Fuel Cell (Photocatalytic Fuel Cell) converts chemical energy and absorbed solar energy in organic wastewater into electric energy through photoelectrochemical reaction, and simultaneously achieves the purpose of wastewater degradation. Liu Shanshan et al Bi2MoO6ITO as anode, Co3O4The carbon fiber cloth is used as a cathode to construct a photocatalytic electrochemical system, and the removal rate of phenol of the system is improved from 6% to 100% after the peroxymonosulfate is added under the condition of externally adding 1.5V bias. (Journal of Catalysis 355(2017) 167-175 contexts). However, the external bias needs to consume electric energy, and the photocatalytic fuel cell system can not only realize the electricity generation output of the system without additional electric energy input. The research on efficient pollutant degradation and efficient power generation is not reported yet.
Disclosure of Invention
The invention aims to provide a novel catalytic peroxymonosulfate-assisted photocatalytic fuel cell system, wherein a cathode is a cobalt ferrite/carbon nanofiber/carbon fiber cloth electrode (CoF) which can efficiently catalyze the peroxymonosulfate reaction2O4/CNFs/CC) or cobalt ferrite/carbon nanofiber/PVDF membrane electrode (CoF)2O4/CNFs/PVDF); the catalytic peroxymonosulfate is realized to assist the photocatalytic reaction to generate free radicals, the pollutant degradation effect of a system is improved, and meanwhile, the electricity is efficiently generated; cathode Co implementation in self-biasing system2+The ion elution is reduced by circulation, and the ion elution can be repeatedly used.
The technical scheme of the invention is as follows:
a novel (membrane) electrode catalysis peroxymonosulfate assisted construction of a photocatalytic fuel cell system comprises a data acquisition system, an aeration system, a circulating system and a reactor; the reactor is a single-chamber or double-chamber quartz reactor, the anode is made of a photocatalytic electrode material, the cathode is made of an electrode material which catalyzes peroxymonosulfate or a membrane electrode material which has an interception function, and the anode and the cathode form a Fermi energy range; the anode is connected with the cathode through an external resistor, and the data acquisition system monitors the power generation of the system in real time; the aeration system is an aeration pump with controllable flow rate, and an aeration head is arranged in the cathode chamber of the reactor; when the cathode is coupled with the membrane electrode material, the water discharged from the cathode membrane is driven by the peristaltic pump to be circularly filtered, so that the circulation of the sewage in the system is realized.
The photocatalytic electrode material is a silver/zinc oxide nanorod array/foam nickel self-supporting electrode material (AgNPs/ZnO NRs/NiF), a zinc oxide nanorod array growing along a zinc oxide crystal layer is prepared on the bottom surface of a foam nickel base by adopting a crystal layer method and a hydrothermal method, silver nano particles are deposited on the surface of the zinc oxide nanorod array through in-situ photoreduction, and the AgNPs/ZnO NRs/NiF is prepared.
The electrode material for catalyzing the peroxymonosulfate is cobalt ferrite/carbon nanofiber/carbon fiber cloth electrode (CoF)2O4/CNFs/CC), the preparation steps are as follows: subjecting CoF2O4the/CNFs powder is dissolved in a silica sol solution or a DuPont film solution, and CoF2O4The concentration of the/CNFs powder is 0.1-0.5 mg/ml;
the electrode material with the interception function and the catalysis of the peroxymonosulfate membrane is a cobalt ferrite/carbon nanofiber/PVDF carbon fiber cloth membrane electrode, and the preparation steps are as follows: subjecting CoF2O4The CNFs powder is scraped on the carbon fiber cloth by a phase conversion method to be used as an electrode;
the cobalt ferrite/carbon nanofiber composite PVDF membrane electrode is fixed by a flat membrane component, the membrane water outlet speed is controlled by an external peristaltic pump, and the membrane water outlet is circulated to a reactor to realize membrane circulation;
the addition amount of Peroxymonosulfate (PMS) in the reaction system is 0.1-2mM, and the cathode material catalyzes PMS to generate sulfate radicals, so that the degradation effect of the photocatalytic fuel cell is improved in an auxiliary manner.
The pollutants are degraded in the presence of dark illumination or by the addition of light to a single-side electrode, and the self-bias of the system generates electrons to promote active Co in the cathode material2+The circulation in the system reduces the ion dissolution and improves the reutilization property of the electrode.
The invention has the beneficial effects that: the invention uses Ag NPs/ZnO NRs/NiF as a photocatalysis anode, and a cobalt ferrite/carbon nanofiber/carbon fiber cloth electrode (CoF)2O4/CNFs/CC) or cobalt ferrite/carbon nanofiber/PVDF membrane electrode (CoF)2O4/CNFs/PVDF) as cathode to construct a novel photocatalytic fuel cell system. The system realizes self-bias electricity generation and pollutant degradation, and simultaneously, the cathode material catalyzes peroxymonosulfate to generate sulfate radicals to assist in improving the performance of the fuel cell; self-bias generation of electrons to promote active sites Co in cathode materials2+The circulation in the system reduces the ion dissolution and improves the reutilization property of the electrode.
Drawings
FIG. 1 shows that the present invention uses Ag NPs/ZnO NRs/NiF as photo-anode, CoF2O4the/CNF/CC is used as a cathode to construct a system for catalyzing the peroxymonosulfate assisted photocatalytic fuel cell (external resistor 2000 omega) to degrade 20mg/L berberine into a diagram (a) and a system power generation diagram (b), and carbon nanofiber cloth is used for replacing cathode and anode materials to construct a comparative system.
FIG. 2 shows that the present invention uses Ag NPs/ZnO NRs/NiF as photo-anode, CoF2O4the/CNF/PVDF membrane is used as a cathode to construct a system for catalyzing the peroxymonosulfate assisted photocatalytic fuel cell (external resistor 2000 omega) to degrade 20mg/L berberine into a diagram (a) and a diagram (b) respectively.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
Example 1
Ag NPs/ZnO NRs/NiF as photo-anode, CoF2O4The CNF/CC is used as a cathode to construct a catalyst peroxymonosulfate auxiliary photocatalytic fuel cell system for degrading berberine:
ag NPs/ZnO NRs/NiF as photo-anode, CoF2O4/CNF/CC is a cathode, a saturated calomel electrode is a reference electrode and is connected with a 2000 omega resistor through a lead, and the bottom of the cathode is aerated. The reaction system is 100ml 10mg/L berberine solution, no electrolyte is needed to be added, the adsorption is carried out for half an hour before the reaction starts, then a 300W xenon lamp is turned on to irradiate, simultaneously 0.05mM PMS is added, and the reaction is carried out for 40 min. Samples of 2.5ml were taken at 5min intervals and absorbance was immediately measured using a spectrophotometer. And voltage data is collected by a voltage data collector in the adsorption and reaction stages of the reaction in the whole process.
The degradation contrast experimental data of the system are shown in (a) in fig. 1, and it can be seen that the degradation rate of the system under the illumination of a 300W xenon lamp for 40min reaches 91%, and the battery potential of the system is about 0.50V under the external 2000 omega resistance; respectively compared with Ag NPs/ZnO NRs/NiF as a photo-anode and a carbon fiber cloth cathode without a catalyst, a carbon fiber cloth anode and CoF2O4the/CNF/CC is a cathode, the Ag NPs/ZnO NRs/NiF is a photo-anode, and the CoF2O4the/CNF/CC is the best performance of a fuel cell system constructed by the cathode.
Example 2
Ag NPs/ZnO NRs/NiF as photo-anode, CoF2O4The method comprises the following steps of constructing a catalytic peroxymonosulfate assisted photocatalytic fuel cell system for degrading berberine by taking a/CNF/PVDF membrane as a cathode:
ag NPs/ZnO NRs/NiF as photo-anode, CoF2O4the/CNF/PVDF membrane is used as a cathode, the saturated calomel electrode is used as a reference electrode and is connected with a lead, a 2000 omega resistor is externally connected, and the bottom of the cathode is aerated. The reaction system is 500ml of 10mg/L berberine solution, no electrolyte is needed to be added, the mixture is adsorbed for half an hour before the reaction starts, a 300W xenon lamp is turned on to irradiate, 0.05mM PMS is added at the same time, and the reaction is carried out for 60 min; the cathode membrane is externally connected with a peristaltic pump to accelerate circulation of berberine liquid, 2.5ml of samples are taken every 10min, and the absorbance is immediately tested by a spectrophotometer. And voltage data is collected by a voltage data collector in the adsorption and reaction stages of the reaction in the whole process. In FIG. 2, (a) is a degradation experimental diagram, the degradation rate of the system can reach 86% in 60min, and the potential of the system is about 0.7V under 2000 Ω external resistance.
Claims (6)
1. A novel membrane electrode catalysis peroxymonosulfate assisted construction photocatalytic fuel cell system is characterized in that the novel membrane electrode catalysis peroxymonosulfate assisted construction photocatalytic fuel cell system comprises a data acquisition system, an aeration system, a circulating system and a reactor; the reactor is a single-chamber or double-chamber quartz reactor, the anode is made of a photocatalytic electrode material, the cathode is made of a membrane electrode material which can catalyze peroxymonosulfate and has an interception function, and the anode and the cathode form a Fermi energy range; the anode is connected with the cathode through an external resistor, and the data acquisition system monitors the power generation of the system in real time; the aeration system is an aeration pump with controllable flow rate, and an aeration head is arranged in the cathode chamber of the reactor; when the cathode is coupled with the membrane electrode material, the effluent of the cathode membrane is driven by a peristaltic pump to be circularly filtered, so that the circulation of the sewage in the system is realized;
the electrode material for catalyzing the peroxymonosulfate is a cobalt ferrite/carbon nanofiber/carbon fiber cloth electrode;
the photocatalytic electrode material is a silver/zinc oxide nanorod array/foamed nickel self-supporting electrode material, a zinc oxide nanorod array growing along a zinc oxide crystal layer is prepared on the surface of a foamed nickel substrate by adopting a crystal layer method and a hydrothermal method, silver nano particles are deposited on the surface of the zinc oxide nanorod array through in-situ photoreduction, and AgNPs/ZnO NRs/NiF is prepared.
2. The novel membrane electrode catalysis peroxymonosulfate auxiliary constructed photocatalysis fuel cell system according to claim 1, wherein the electrode material for catalyzing peroxymonosulfate is cobalt ferrite/carbon nanofiber/carbon fiber cloth electrode, and the preparation steps are as follows: subjecting CoF2O4the/CNFs powder is dissolved in a silica sol solution or a DuPont film solution, and CoF2O4The concentration of the/CNFs powder is 0.1-0.5 mg/ml.
3. The novel membrane electrode catalysis peroxymonosulfate auxiliary constructed photocatalytic fuel cell system as claimed in claim 1 or 2, wherein the electrode material with the interception function and the catalysis peroxymonosulfate membrane is a cobalt ferrite/carbon nanofiber/PVDF carbon fiber cloth membrane electrode, and the preparation steps are as follows: subjecting CoF2O4the/CNFs powder is scraped on the carbon fiber cloth by a phase conversion method to be madeAre electrodes.
4. The novel membrane electrode catalysis peroxymonosulfate auxiliary constructed photocatalysis fuel cell system as claimed in claim 3, wherein the cobalt ferrite/carbon nanofiber/PVDF carbon fiber cloth membrane electrode is fixed through a flat membrane component, the membrane water outlet speed is controlled by an external peristaltic pump, and the membrane water outlet is circulated to the reactor to realize membrane circulation.
5. The novel membrane electrode catalysis peroxymonosulfate auxiliary construction photocatalytic fuel cell system as recited in claim 1, 2 or 4, wherein the addition amount of peroxymonosulfate in the reaction system is 0.1-2mM, and the cathode material catalyzes PMS to generate sulfate radical free radical to assist in improving the degradation effect of the photocatalytic fuel cell; the degradation of pollutants is realized in the presence or absence of illumination or the addition of light to a single-side electrode, and the self-bias of the system generates electrons to promote the active Co in the cathode material2+The circulation in the system reduces the ion dissolution and improves the reutilization property of the electrode.
6. The novel membrane electrode catalysis peroxymonosulfate auxiliary constructed photocatalytic fuel cell system as recited in claim 3, wherein the addition amount of the peroxymonosulfate in the reaction system is 0.1-2mM, and the cathode material catalyzes PMS to generate sulfate radical free radicals to assist in improving the degradation effect of the photocatalytic fuel cell; the degradation of pollutants is realized in the presence or absence of illumination or the addition of light to a single-side electrode, and the self-bias of the system generates electrons to promote the active Co in the cathode material2+The circulation in the system reduces the ion dissolution and improves the reutilization property of the electrode.
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