CN114411176B - Photoelectrocatalysis preparation H 2 O 2 Device and application thereof - Google Patents
Photoelectrocatalysis preparation H 2 O 2 Device and application thereof Download PDFInfo
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- CN114411176B CN114411176B CN202210088132.9A CN202210088132A CN114411176B CN 114411176 B CN114411176 B CN 114411176B CN 202210088132 A CN202210088132 A CN 202210088132A CN 114411176 B CN114411176 B CN 114411176B
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- membrane
- exchange membrane
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- choline chloride
- cathode
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- YECIFGHRMFEPJK-UHFFFAOYSA-N lidocaine hydrochloride monohydrate Chemical compound O.[Cl-].CC[NH+](CC)CC(=O)NC1=C(C)C=CC=C1C YECIFGHRMFEPJK-UHFFFAOYSA-N 0.000 title claims description 4
- 239000012528 membrane Substances 0.000 claims abstract description 91
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 32
- 239000003054 catalyst Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 150000001336 alkenes Chemical class 0.000 claims abstract description 19
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 15
- 238000006735 epoxidation reaction Methods 0.000 claims abstract description 14
- 238000005341 cation exchange Methods 0.000 claims description 27
- 239000007864 aqueous solution Substances 0.000 claims description 23
- 239000003011 anion exchange membrane Substances 0.000 claims description 22
- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 claims description 21
- 229960001231 choline Drugs 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 17
- 238000005266 casting Methods 0.000 claims description 16
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 claims description 14
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 102000004190 Enzymes Human genes 0.000 claims description 9
- 108090000790 Enzymes Proteins 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 8
- 230000005496 eutectics Effects 0.000 claims description 8
- CCCMONHAUSKTEQ-UHFFFAOYSA-N octadec-1-ene Chemical compound CCCCCCCCCCCCCCCCC=C CCCMONHAUSKTEQ-UHFFFAOYSA-N 0.000 claims description 8
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052724 xenon Inorganic materials 0.000 claims description 7
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 7
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 claims description 6
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004367 Lipase Substances 0.000 claims description 6
- 102000004882 Lipase Human genes 0.000 claims description 6
- 108090001060 Lipase Proteins 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- HGCIXCUEYOPUTN-UHFFFAOYSA-N cyclohexene Chemical compound C1CCC=CC1 HGCIXCUEYOPUTN-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 235000019421 lipase Nutrition 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229920002492 poly(sulfone) Polymers 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- -1 chloride-xylose-water Chemical compound 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000003431 cross linking reagent Substances 0.000 claims description 4
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 4
- GIIOFTHZYOBSHL-VFQQELCFSA-N (2r,3r,4r,5s)-hexane-1,2,3,4,5,6-hexol;hydrochloride Chemical compound Cl.OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO GIIOFTHZYOBSHL-VFQQELCFSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- VYWQTJWGWLKBQA-UHFFFAOYSA-N [amino(hydroxy)methylidene]azanium;chloride Chemical compound Cl.NC(N)=O VYWQTJWGWLKBQA-UHFFFAOYSA-N 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 3
- URYYVOIYTNXXBN-UPHRSURJSA-N cyclooctene Chemical compound C1CCC\C=C/CC1 URYYVOIYTNXXBN-UPHRSURJSA-N 0.000 claims description 3
- 239000004913 cyclooctene Substances 0.000 claims description 3
- OASOQJKCZXXDMI-UHFFFAOYSA-N ethane-1,2-diol;hydrochloride Chemical compound Cl.OCCO OASOQJKCZXXDMI-UHFFFAOYSA-N 0.000 claims description 3
- 239000001630 malic acid Substances 0.000 claims description 3
- 239000002808 molecular sieve Substances 0.000 claims description 3
- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- QVODDTOUOLSPFQ-FAOVPRGRSA-N (2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanal hydrate hydrochloride Chemical compound O.Cl.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O QVODDTOUOLSPFQ-FAOVPRGRSA-N 0.000 claims description 2
- IVPFCJFBIPBZJQ-CHUJMTOYSA-N OC[C@H]([C@@H]([C@H](CO)O)O)O.Cl Chemical compound OC[C@H]([C@@H]([C@H](CO)O)O)O.Cl IVPFCJFBIPBZJQ-CHUJMTOYSA-N 0.000 claims description 2
- AXJDEHNQPMZKOS-UHFFFAOYSA-N acetylazanium;chloride Chemical compound [Cl-].CC([NH3+])=O AXJDEHNQPMZKOS-UHFFFAOYSA-N 0.000 claims description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 claims description 2
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 claims description 2
- 229940073608 benzyl chloride Drugs 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 125000002843 carboxylic acid group Chemical group 0.000 claims description 2
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Substances OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N glycerol Substances OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 2
- 229920013636 polyphenyl ether polymer Polymers 0.000 claims description 2
- NQCBIMOYRRMVNA-UHFFFAOYSA-N propane-1,2,3-triol;hydrochloride Chemical compound Cl.OCC(O)CO NQCBIMOYRRMVNA-UHFFFAOYSA-N 0.000 claims description 2
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 claims description 2
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 2
- 238000010345 tape casting Methods 0.000 claims description 2
- 125000001302 tertiary amino group Chemical group 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 239000000811 xylitol Substances 0.000 claims description 2
- 229960002675 xylitol Drugs 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000002071 nanotube Substances 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000010494 dissociation reaction Methods 0.000 abstract description 4
- 230000005593 dissociations Effects 0.000 abstract description 4
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
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- 238000001035 drying Methods 0.000 description 8
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- 238000004090 dissolution Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
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- 239000007789 gas Substances 0.000 description 4
- 238000004817 gas chromatography Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000001699 photocatalysis Effects 0.000 description 4
- 239000011941 photocatalyst Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- YSRQRFIVCMIJJE-UHFFFAOYSA-M 2,3-dihydroxypropyl(trimethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CC(O)CO YSRQRFIVCMIJJE-UHFFFAOYSA-M 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 238000006701 autoxidation reaction Methods 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000012621 metal-organic framework Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229940080469 phosphocellulose Drugs 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/28—Per-compounds
- C25B1/30—Peroxides
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P17/00—Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms
- C12P17/02—Oxygen as only ring hetero atoms
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/50—Processes
- C25B1/55—Photoelectrolysis
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
- C25B11/036—Bipolar electrodes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/052—Electrodes comprising one or more electrocatalytic coatings on a substrate
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/055—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material
- C25B11/069—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of at least one single element and at least one compound; consisting of two or more compounds
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
- C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B13/00—Diaphragms; Spacing elements
- C25B13/04—Diaphragms; Spacing elements characterised by the material
- C25B13/08—Diaphragms; Spacing elements characterised by the material based on organic materials
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
- C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
- C25B9/21—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms two or more diaphragms
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
- C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
- C25B9/23—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
Abstract
The invention belongs to H 2 O 2 The field of preparation, in particular to a device for preparing H2O2 by photoelectrocatalysis and application thereof. To solve the problems of small oxygen concentration on the surface of the catalyst and H generation 2 O 2 The invention relates to a device containing a photoelectrocatalysis composite membrane, which can prepare H by photoelectrocatalysis 2 O 2 And utilize the generated H 2 O 2 An apparatus for carrying out an olefin epoxidation reaction. The porous hydrophobic membrane is beneficial to oxygen transfer and enrichment, and ensures that the surface of the photoelectrocatalyst has sufficient oxygen; h generated by interfacial layer water dissociation in bipolar membrane + Ensure H 2 O 2 Has enough H in the synthesis reaction process + Supplying; electrons generated on the surface of the photoelectrocatalyst ensure enough electrons to be dissociated with oxygen enriched on the surface of the catalyst and H generated by the interfacial layer hydrolysis in the bipolar membrane + Combine to generate H 2 O 2 And utilize the generated H 2 O 2 An olefin epoxidation reaction is carried out.
Description
Technical Field
The invention belongs to H 2 O 2 The field of preparation, in particular to a method for preparing H by photoelectrocatalysis 2 O 2 Devices and applications thereof.
Background
H 2 O 2 As an effective redox reagent, it is widely used in the fields of water purification, antibacterial, bleaching, cleaning agents, organic compound synthesis, fuel cells, and the like. At present, H is produced on a large scale 2 O 2 The methods of (a) mainly include electrochemical synthesis, alcohol oxidation, anthraquinone autoxidation, etc., but these methods are not ideal methods because of the need to consume a large amount of energy and organic solvents. Preparation of H by semiconductor photocatalysis technology 2 O 2 In recent years, the process takes water and oxygen as raw materials, and energy is derived from sunlight, so that the process is green for preparing H 2 O 2 Techniques.
However, in the photocatalytic preparation of H 2 O 2 In the process, the following problems are generally encountered: (1) The solubility of oxygen in water is smaller, resulting in a smaller oxygen concentration at the surface of the catalyst; (2) It is often necessary to additionally add alcohols or acids etc. to provide protons; (3) Generated H 2 O 2 Unstable and decomposed under light. In view of the above problems, conventional solutions have generally focused on modifying, regulating, or otherwise seeking new catalysts.
Disclosure of Invention
Directed to the preparation of H in photocatalysis 2 O 2 In the process, the solubility of oxygen in water is smaller, so that the oxygen concentration on the surface of the catalyst is smaller; (2) It is often necessary to additionally add alcohols or acids etc. to provide protons; (3) Generated H 2 O 2 Unstable and decomposed under illumination, the invention provides a method for preparing H by photoelectrocatalysis 2 O 2 Apparatus and its use in olefin epoxidation reactions.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
photoelectrocatalysis preparation H 2 O 2 The device comprises a reactor, a photoelectrocatalysis composite membrane, a cathode, an anode, a direct current power supply, a light source and an air duct; the photoelectric catalytic composite membrane is arranged in the reactor, the reactor is divided into an anode chamber and a cathode chamber, the anode and the cathode are respectively arranged in the anode chamber and the cathode chamber, the anode and the cathode of the direct current power supply are respectively connected with the anode and the cathode, the light source is arranged above the cathode chamber, and the air duct is positioned in the cathode chamber to lead oxygen into the cathode chamber;
the photoelectrocatalysis composite membrane consists of a bipolar membrane and a porous hydrophobic membrane with a surface loaded with a photoelectrocatalyst, wherein the bipolar membrane is formed by compositing an anion exchange membrane and a cation exchange membrane; the anode chamber is electrolyte aqueous solution, the cathode chamber is eutectic solvent aqueous solution containing enzyme, and the light source is a xenon lamp.
Further, the preparation method of the photoelectrocatalysis composite membrane comprises the following steps:
(1) One or a mixture of several of polyvinyl alcohol, polyvinylpyrrolidone, polysulfone and polyvinyl benzyl chloride in any proportion is used as the support of the anion exchange membrane, one or a plurality of compounds containing primary amino, secondary amino, tertiary amino or quaternary amino which are mixed according to any proportion are used as the fixed groups of the anion exchange membrane, glutaraldehyde solution is added as a cross-linking agent to prepare anion exchange membrane liquid, and the anion exchange membrane is prepared by a tape casting method;
(2) The method comprises the steps of taking one or a mixture of more than one of polyvinyl alcohol, polyvinylpyrrolidone, polyphenyl ether, polysulfone and styrene in any proportion as a support of a cation exchange membrane, taking one or a mixture of more than one of a compound containing sulfonic acid groups, carboxylic acid groups or phosphoric acid groups in any proportion as a fixed group of the cation exchange membrane, and adding FeCl 3 Or CaCl 2 Preparing a cation exchange membrane solution by taking the solution as a cross-linking agent, and casting the solution on the surface of the anion exchange membrane prepared in the step (1) to obtain the cation exchange membrane;
(3) And ultrasonically dispersing the porous hydrophobic material with the surface loaded with the photoelectric catalyst into deionized water or absolute ethyl alcohol, and casting the porous hydrophobic material on the surface of the cation exchange membrane to obtain the porous hydrophobic membrane with the surface loaded with the photoelectric catalyst.
Further, the photocatalyst is C 3 N 4 、TiO 2 、MoS 2 、CdS、Cu 2 O、Fe 2 O 3 And BiOCl, wherein the porous hydrophobic material is carbon fiber, carbon nanotube, hydrophobic mesoporous SiO 2 One of the hydrophobic molecular sieve and hydrophobic metal organic framework material.
Further, the electrolyte aqueous solution is Na 2 SO 4 NaOH or KOH, the concentration is 0.01 to 3.0mol L -1 The method comprises the steps of carrying out a first treatment on the surface of the The eutectic solvent includes: choline chloride-urea, choline chloride-acetamide, choline chloride-ethylene glycol, choline chloride-glycerol, choline chloride-xylitol, choline chloride-sorbitol, choline chloride-xylose-water, choline chloride-glucose-water, choline chloride-sucrose-water, betaine-malic acid, betaine-citric acid, betaine-glycerol, betaine-xylitol, betaine-urea; the enzyme is lipase.
Further, the voltage of the DC power supply is 0.4-1.5V.
Photoelectrocatalysis preparation H 2 O 2 The device is applied to olefin epoxidation reaction.
Further, the specific method applied to olefin epoxidation reaction is as follows: adding octanoic acid and unsaturated olefin into cathode chamber, and using photoelectrocatalysis to generate H 2 O 2 The olefin epoxidation reaction is carried out under the action of enzyme catalysis.
Further, the unsaturated olefin comprises: cyclooctene, 1-hexene, cyclohexene, 1-decene, 1-octadecene, styrene, alpha-methylstyrene.
Compared with the prior art, the invention has the following advantages:
(1) The porous hydrophobic membrane is beneficial to oxygen transfer and enrichment, and ensures that the surface of the photoelectric catalyst has sufficient oxygen.
(2) Under the action of a direct current electric field, the intermediate interface layer of the bipolar membrane is subjected to water dissociation, and the generated H+ is transferred to the photoelectricity through the surface of the cation exchange membraneThe surface of the catalyst participates in the reaction to ensure H 2 O 2 Has enough H in the synthesis reaction process + Supplying; at the same time, the water dissociation rate of the interface layer in the middle of the bipolar membrane is controlled to ensure H + Supply amount and synthesis H 2 O 2 The reaction needs to be matched, and the occurrence of H is avoided + Insufficient supply to cause H 2 O 2 Synthesis is hindered, or due to H + Excess results in a decrease in the pH of the solution, which affects the activity and stability of the enzyme.
(3) Under the photoelectric effect, electrons generated on the surface of the photoelectric catalyst and H generated by the hydrolytic dissociation of an interface layer in the middle of the bipolar membrane and oxygen enriched on the surface of the catalyst + Combine to generate H 2 O 2 。
(4) The invention adds octanoic acid and unsaturated olefin in the cathode chamber, and utilizes the generated H 2 O 2 Carrying out olefin epoxidation reaction, H 2 O 2 Consumption is generated simultaneously, not only can effectively avoid H 2 O 2 Too high a concentration results in reduced enzyme activity and stability, and also due to H 2 O 2 And is consumed in time to avoid decomposition.
(5) The invention utilizes the characteristic that the membrane liquid has viscosity to cast the photoelectric catalyst on the surface of the cationic membrane, thereby not only effectively avoiding the agglomeration phenomenon caused by directly adding the catalyst powder into an oil-water two-phase system in the traditional method, but also being convenient for recycling the photoelectric catalyst.
Drawings
FIG. 1 shows the photoelectrocatalytic preparation of H according to the invention 2 O 2 Schematic diagram of the device;
FIG. 2 is a cross-sectional SEM image of a bipolar membrane after brittle fracture in liquid nitrogen;
FIG. 3 is a schematic illustration of the preparation of a cation exchange membrane using FeCl according to example 1 3 Schematic solution cross-linking;
FIG. 4 is a MoS prepared in example 1 2 And (3) a topography of the photocatalyst.
Detailed Description
Example 1
As shown in FIG. 1, a photoelectrocatalysis is used for preparing H 2 O 2 The device comprises a reactor, a photoelectrocatalysis composite membrane, a cathode, an anode, a direct current power supply, a light source and an air duct; the photoelectric catalytic composite membrane is arranged in the reactor, the reactor is divided into an anode chamber and a cathode chamber, the anode and the cathode are respectively arranged in the anode chamber and the cathode chamber, the anode and the cathode of the direct current power supply are respectively connected with the anode and the cathode, the light source is arranged above the cathode chamber, and the air duct is positioned in the cathode chamber to lead oxygen into the cathode chamber;
the photoelectrocatalysis composite membrane consists of a bipolar membrane and a porous hydrophobic membrane with a surface loaded with a photoelectrocatalyst, wherein the bipolar membrane is formed by compositing an anion exchange membrane and a cation exchange membrane; the anode chamber is electrolyte aqueous solution, the cathode chamber is eutectic solvent aqueous solution containing enzyme, and the light source is a xenon lamp.
The preparation method of the photoelectrocatalysis composite membrane comprises the following steps:
(1) Mixing polyvinyl alcohol and chitosan with equal mass, pouring into a beaker, adding acetic acid aqueous solution with mass fraction of 0.01%, continuously stirring in a constant-temperature water bath at 60 ℃, adding glutaraldehyde after complete dissolution, continuously stirring for 1h, standing for deaeration, casting on a flat and dry glass plate with a frame, and drying in a blast drying box to obtain an anion exchange membrane;
(2) Mixing polyvinyl alcohol and sodium carboxymethylcellulose with equal mass, pouring into beaker, stirring, adding deionized water, heating to 60deg.C for dissolving, and adding FeCl after complete dissolving 3 Continuously stirring the solution for 1h, standing for deaeration, and casting on the surface of the prepared anion exchange membrane to obtain a cation exchange membrane;
(3) Photoelectrocatalyst C 3 N 4 The hydrophobic membrane is loaded on the surface of hydrophobic carbon fiber, then dispersed in aqueous solution or absolute ethyl alcohol by ultrasonic, and cast on the surface of a cation exchange membrane to obtain the hydrophobic membrane loaded with the photoelectric catalyst.
The photoelectrocatalysis composite membrane is used as a diaphragm of an anode chamber and a cathode chamber, and the concentration of the anode chamber is 0.01mol L -1 Na of (2) 2 SO 4 Electrolyte aqueous solution, and choline chloride-sorbitol low-concentration electrolyte containing lipase is added into cathode chamberMelting solvent water solution, adding octanoic acid and 1-hexene, bubbling into O 2 Under the irradiation of xenon lamp light source, the gas is photoelectrocatalytically prepared into H under the condition that the direct-current power supply voltage is 1.0V 2 O 2 Then utilize the generated H 2 O 2 An olefin epoxidation reaction is carried out. After 36 hours of reaction, the product was analyzed by gas chromatography to give a conversion of 6.12% of cyclooctene.
Fig. 2 is a cross-sectional SEM image of a bipolar membrane after breaking down in liquid nitrogen, from which the anion-exchange membrane and the cation-exchange membrane constituting the bipolar membrane, as well as the intermediate interface layer between the two membrane layers, can be clearly seen. The thickness of the middle interface layer of the bipolar membrane is usually only nano-scale, so that even if a small voltage is applied to two sides of the bipolar membrane, a strong electric field can be formed by the middle interface layer of the bipolar membrane, and water molecules of the middle interface layer of the bipolar membrane can be dissociated under the action of the strong electric field.
FIG. 3 is a schematic diagram of FeCl 3 Schematic representation of solution-crosslinked cation exchange membranes, as can be seen from the figure, by FeCl 3 After the solution is crosslinked, the cation exchange membrane forms a net structure, which is beneficial to improving the mechanical property of the membrane, thereby prolonging the service life of the membrane.
FIG. 4 is a MoS produced 2 Morphology of photocatalyst, from which it can be seen that MoS 2 The photocatalyst has a single-layer or less-layer lamellar structure, which is beneficial to improving the separation efficiency of photo-generated carriers, thereby improving the photo-catalytic efficiency.
Example 2
The difference from example 1 is that the preparation method of the photoelectrocatalysis composite membrane comprises the following specific steps:
(1) Mixing polyvinylpyrrolidone and quaternary ammonium polysulfone in a mass ratio of 2:1, pouring into a beaker, adding acetic acid aqueous solution with a mass fraction of 0.02%, continuously stirring in a constant-temperature water bath kettle at 50 ℃, adding glutaraldehyde after complete dissolution, continuously stirring for 1h, standing for deaeration, casting on a flat and dry glass plate with a frame, and drying in a blast drying box to obtain an anion exchange membrane;
(2) Polyethylene of equal massMixing pyrrolidone and phosphocellulose, pouring into beaker, stirring, adding deionized water, heating to 60deg.C for dissolving, and adding CaCl after completely dissolving 2 Continuously stirring the solution for 1h, standing for deaeration, and casting on the surface of the prepared anion exchange membrane to obtain a cation exchange membrane;
(3) The photoelectric catalyst TiO 2 Loading the membrane on the surface of a hydrophobic carbon nano tube, then dispersing the membrane in aqueous solution or absolute ethyl alcohol by ultrasonic, and casting the membrane on the surface of a cation exchange membrane to obtain the hydrophobic membrane loaded with the photoelectric catalyst.
The photoelectrocatalysis composite membrane is used as a diaphragm of an anode chamber and a cathode chamber, and the concentration of the anode chamber is 3.0mol L -1 K of (2) 2 SO 4 Adding aqueous solution of electrolyte and aqueous solution of lipase-containing choline chloride-urea eutectic solvent into cathode chamber, adding octanoic acid and cyclohexane, and bubbling to introduce O 2 Under the irradiation of xenon lamp light source, the gas is photoelectrocatalytically prepared into H under the condition that the direct-current power supply voltage is 1.5V 2 O 2 Then utilize the generated H 2 O 2 An olefin epoxidation reaction is carried out. After 30 hours of reaction, the product was analyzed by gas chromatography to give cyclohexene with a conversion of 3.52%.
Example 3
The difference from example 1 is that the preparation method of the photoelectrocatalysis composite membrane comprises the following specific steps:
(1) Mixing polyethylene benzyl chloride and polyimide in a mass ratio of 3:1, pouring into a beaker, adding acetic acid aqueous solution with a mass fraction of 0.03%, continuously stirring in a constant-temperature water bath kettle at 60 ℃, adding glutaraldehyde after complete dissolution, continuously stirring for 1.5h, standing for deaeration, casting on a flat and dry glass plate with a frame, and drying in a blast drying box to obtain an anion exchange membrane;
(2) Mixing polyphenylene oxide and sulfonic fiber with equal mass, pouring into beaker, adding deionized water under stirring, heating to 70deg.C for dissolving, adding CaCl after dissolving completely 2 Continuously stirring the solution for 1h, standing for deaeration, and casting on the surface of the prepared anion exchange membrane to obtain a cation exchange membrane;
(3) By photo-electric catalyst MoS 2 Loading the membrane on the surface of a hydrophobic molecular sieve, then dispersing the membrane in aqueous solution or absolute ethyl alcohol by ultrasonic, and casting the membrane on the surface of a cation exchange membrane to obtain the hydrophobic membrane loaded with the photoelectric catalyst.
The photoelectrocatalysis composite membrane is used as a diaphragm of an anode chamber and a cathode chamber, and the concentration of the anode chamber is 0.01mol L -1 K of (2) 2 SO 4 Electrolyte aqueous solution, aqueous solution of eutectic solvent of choline chloride-ethylene glycol containing lipase is added into cathode chamber, octanoic acid and 1-octadecene are added, O is introduced by bubbling mode 2 Under the irradiation of xenon lamp light source, the gas is subjected to photoelectrocatalysis to prepare H under the condition that the direct current power supply voltage is 0.8V 2 O 2 Then utilize the generated H 2 O 2 An olefin epoxidation reaction is carried out. After 42 hours of reaction, the product was analyzed by gas chromatography to give 1.76% conversion of 1-octadecene.
Example 4
The difference from example 1 is that the preparation method of the photoelectrocatalysis composite membrane comprises the following specific steps:
(1) Mixing polysulfone and glyceryl trimethyl ammonium chloride with the mass ratio of 0.5:1, pouring into a beaker, adding acetic acid aqueous solution with the mass fraction of 0.005%, continuously stirring in a constant-temperature water bath kettle at 70 ℃, adding glutaraldehyde after complete dissolution, continuously stirring for 2.5h, standing for deaeration, casting on a flat and dry glass plate with a frame, and drying in a blast drying box to obtain an anion exchange membrane;
(2) Mixing polyvinylpyrrolidone and cellulose acetate with equal mass, pouring into beaker, adding phosphoric acid aqueous solution with mass fraction of 0.05% under stirring, heating to 70deg.C for dissolving, and adding FeCl after complete dissolution 3 Continuously stirring the solution for 1h, standing for deaeration, and casting on the surface of the prepared anion exchange membrane to obtain a cation exchange membrane;
(3) The photoelectric catalyst BiOCl is loaded on the hydrophobic mesoporous SiO 2 And then dispersing the surface of the porous membrane in aqueous solution or absolute ethyl alcohol by ultrasonic, and casting the surface of the porous membrane on the surface of a cation exchange membrane to obtain the hydrophobic membrane loaded with the photoelectrocatalyst.
The photoelectrocatalysis composite membrane is used as a diaphragm of an anode chamber and a cathode chamber, and the concentration of the anode chamber is 0.01mol L -1 Adding a eutectic solvent aqueous solution of betaine-malic acid containing lipase into a cathode chamber, adding octanoic acid and styrene, and introducing O by bubbling 2 Under the irradiation of xenon lamp light source, the gas is subjected to photoelectrocatalysis to prepare H under the condition that the direct current power supply voltage is 0.4V 2 O 2 Then utilize the generated H 2 O 2 An olefin epoxidation reaction is carried out. After 48 hours of reaction, the product was analyzed by gas chromatography to give styrene at a conversion of 2.23%.
Claims (6)
1. Photoelectrocatalysis preparation H 2 O 2 The device is characterized by comprising a reactor, a photoelectrocatalysis composite membrane, a cathode, an anode, a direct current power supply, a light source and an air duct; the photoelectric catalytic composite membrane is arranged in the reactor, the reactor is divided into an anode chamber and a cathode chamber, the anode and the cathode are respectively arranged in the anode chamber and the cathode chamber, the anode and the cathode of the direct current power supply are respectively connected with the anode and the cathode, the light source is arranged above the cathode chamber, and the air duct is positioned in the cathode chamber to lead oxygen into the cathode chamber;
the photoelectrocatalysis composite membrane consists of a bipolar membrane and a porous hydrophobic membrane with a surface loaded with a photoelectrocatalyst, wherein the bipolar membrane is formed by compositing an anion exchange membrane and a cation exchange membrane; the anode chamber is an electrolyte aqueous solution, the cathode chamber is an enzyme-containing eutectic solvent aqueous solution, and the light source is a xenon lamp;
the preparation method of the porous hydrophobic membrane with the surface loaded with the photoelectric catalyst comprises the following steps: ultrasonically dispersing a porous hydrophobic material with a surface loaded with a photoelectric catalyst into deionized water or absolute ethyl alcohol, and casting the porous hydrophobic material on the surface of a cation exchange membrane to obtain the porous hydrophobic membrane with the surface loaded with the photoelectric catalyst;
the photoelectric catalyst is C 3 N 4 、TiO 2 、MoS 2 、CdS、Cu 2 O、Fe 2 O 3 And BiOCl, wherein the porous hydrophobic material is carbon fiberCarbon nanotubes, hydrophobic mesoporous SiO 2 One of the hydrophobic molecular sieve and hydrophobic metal organic frame material; the electrolyte aqueous solution is Na 2 SO 4 NaOH or KOH, the concentration is 0.01-3.0 mol L -1 The method comprises the steps of carrying out a first treatment on the surface of the The eutectic solvent includes: choline chloride-urea, choline chloride-acetamide, choline chloride-ethylene glycol, choline chloride-glycerol, choline chloride-xylitol, choline chloride-sorbitol, choline chloride-xylose-water, choline chloride-glucose-water, choline chloride-sucrose-water, betaine-malic acid, betaine-citric acid, betaine-glycerol, betaine-xylitol, betaine-urea; the enzyme is lipase.
2. A photoelectrocatalytic preparation of H according to claim 1 2 O 2 The device is characterized in that the preparation method of the photoelectrocatalysis composite membrane comprises the following steps:
(1) One or a mixture of several of polyvinyl alcohol, polyvinylpyrrolidone, polysulfone and polyvinyl benzyl chloride in any proportion is used as the support of the anion exchange membrane, one or a plurality of compounds containing primary amino, secondary amino, tertiary amino or quaternary amino which are mixed according to any proportion are used as the fixed groups of the anion exchange membrane, glutaraldehyde solution is added as a cross-linking agent to prepare anion exchange membrane liquid, and the anion exchange membrane is prepared by a tape casting method;
(2) The method comprises the steps of taking one or a mixture of more than one of polyvinyl alcohol, polyvinylpyrrolidone, polyphenyl ether, polysulfone and styrene in any proportion as a support of a cation exchange membrane, taking one or a mixture of more than one of a compound containing sulfonic acid groups, carboxylic acid groups or phosphoric acid groups in any proportion as a fixed group of the cation exchange membrane, and adding FeCl 3 Or CaCl 2 Preparing a cation exchange membrane solution by taking the solution as a cross-linking agent, and casting the solution on the surface of the anion exchange membrane prepared in the step (1) to obtain the cation exchange membrane;
(3) And ultrasonically dispersing the porous hydrophobic material with the surface loaded with the photoelectric catalyst into deionized water or absolute ethyl alcohol, and casting the porous hydrophobic material on the surface of the cation exchange membrane to obtain the porous hydrophobic membrane with the surface loaded with the photoelectric catalyst.
3. A photoelectrocatalytic preparation of H according to claim 1 2 O 2 The device is characterized in that the voltage of the direct current power supply is 0.4-1.5V.
4. A photoelectrocatalytic process for preparing H as claimed in claim 1 2 O 2 The device is characterized by being applied to olefin epoxidation reaction.
5. A photoelectrocatalytic process for preparing H according to claim 4 2 O 2 The device is applied to olefin epoxidation reaction, which is characterized in that the specific method comprises the following steps: adding octanoic acid and unsaturated olefin into cathode chamber, and using photoelectrocatalysis to generate H 2 O 2 The olefin epoxidation reaction is carried out under the action of enzyme catalysis.
6. A photoelectrocatalytic process for preparing H according to claim 5 2 O 2 Use of a device, characterized in that the unsaturated olefin comprises cyclooctene, 1-hexene, cyclohexene, 1-decene, 1-octadecene, styrene, alpha-methylstyrene.
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