CN106076365B - A kind of composite photo-catalyst promoting photodissociation aquatic products hydrogen - Google Patents
A kind of composite photo-catalyst promoting photodissociation aquatic products hydrogen Download PDFInfo
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- CN106076365B CN106076365B CN201610413543.5A CN201610413543A CN106076365B CN 106076365 B CN106076365 B CN 106076365B CN 201610413543 A CN201610413543 A CN 201610413543A CN 106076365 B CN106076365 B CN 106076365B
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- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 26
- 239000001257 hydrogen Substances 0.000 title claims abstract description 22
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 22
- 238000006303 photolysis reaction Methods 0.000 title claims abstract description 20
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims description 15
- 230000001737 promoting effect Effects 0.000 title abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 230000001699 photocatalysis Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229910001868 water Inorganic materials 0.000 claims description 7
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 6
- 150000002431 hydrogen Chemical class 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- LHQLJMJLROMYRN-UHFFFAOYSA-L cadmium acetate Chemical compound [Cd+2].CC([O-])=O.CC([O-])=O LHQLJMJLROMYRN-UHFFFAOYSA-L 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims 2
- MQRWBMAEBQOWAF-UHFFFAOYSA-N acetic acid;nickel Chemical compound [Ni].CC(O)=O.CC(O)=O MQRWBMAEBQOWAF-UHFFFAOYSA-N 0.000 claims 1
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims 1
- 239000011259 mixed solution Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- 229940078494 nickel acetate Drugs 0.000 claims 1
- 239000003054 catalyst Substances 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 7
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 abstract description 4
- 239000003426 co-catalyst Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 2
- 239000002803 fossil fuel Substances 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 39
- 239000000047 product Substances 0.000 description 16
- 238000006555 catalytic reaction Methods 0.000 description 10
- 239000004065 semiconductor Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- -1 NiTiO3 Inorganic materials 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- OINIXPNQKAZCRL-UHFFFAOYSA-L nickel(2+);diacetate;tetrahydrate Chemical class O.O.O.O.[Ni+2].CC([O-])=O.CC([O-])=O OINIXPNQKAZCRL-UHFFFAOYSA-L 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- WHBHBVVOGNECLV-OBQKJFGGSA-N 11-deoxycortisol Chemical compound O=C1CC[C@]2(C)[C@H]3CC[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 WHBHBVVOGNECLV-OBQKJFGGSA-N 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 229940078487 nickel acetate tetrahydrate Drugs 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
- B01J27/043—Sulfides with iron group metals or platinum group metals
-
- B01J35/39—
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/042—Decomposition of water
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1047—Group VIII metal catalysts
- C01B2203/1052—Nickel or cobalt catalysts
- C01B2203/1058—Nickel catalysts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1094—Promotors or activators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Abstract
The invention discloses a kind of composite photo-catalysts promoting photodissociation aquatic products hydrogen, use sol-gal process synthesis perovskite material NiTiO3, then by NiTiO3It as co-catalyst, is introduced into CdS by condensation-circumfluence method, CdS/NiTiO is made3Composite photo-catalyst.The composite catalyst can pass through CdS and NiTiO3Between the heterojunction structure that is formed, promote the transfer of photo-generated carrier, reduce the compound probability of light induced electron and hole, to significantly improve the efficiency of photodissociation aquatic products hydrogen, and the shortcomings that can alleviate photoetch existing for tradition photochemical catalyst.Meanwhile preparation method is simple for the composite photo-catalyst, reaction condition is mild, is efficiently had broad application prospects in the alternative energy source for developing fossil fuel and using solar energy etc..
Description
Technical field
The invention belongs to photodissociation aquatic products hydrogen technical fields, and in particular to a kind of composite photocatalyst promoting photodissociation aquatic products hydrogen
Agent.
Background technology
The double challenge of the energy crisis and environmental pollution that are faced in face of the current whole world, people are trying to explore exploitation clearly
Find that photocatalysis technology has many advantages, such as that at low cost, reaction condition is mild, environmental-friendly and energy consumption is small during clean new energy,
Wherein photodissociation aquatic products hydrogen has obtained extensive research.Using photodissociation aquatic products hydrogen technology, make H2O is converted into H2, can be to a certain extent
Alleviating energy crisis.Meanwhile H2As a kind of new cleaning fuel, use will not cause new pollution problem.Compared to biography
The electrolysis aquatic products hydrogen of system reacts, and the cost of photodissociation aquatic products hydrogen is low, and reaction condition is mild, has a extensive future, to exploitation fossil combustion
Material alternative energy source and solution problem of environmental pollution tool have very important significance.
Just have early in the seventies in last century and utilizes TiO2The research for carrying out photodissociation aquatic products hydrogen, wherein using semiconductor as light
Catalyst has been obtained for largely studying to carry out light-catalyzed reaction.Traditional semiconductor light-catalyst includes TiO2、ZnO、
SnO2, CdS etc..But traditional semiconductor light-catalyst is low since there are quantum efficiencies, absorbing properties are poor, structural instability
The shortcomings of, cause its photocatalysis efficiency low, limits its large-scale production and application.Researcher carries by various methods
High conductor photocatalysis reaction efficiency, one of the most common method are precious metal dopings.It can change half by precious metal doping
The a series of physical chemical property such as bandwidth, extinction property of conductor, in light reaction procedure, the metal of doping can be used as freely
The capture site of electronics, to inhibit the compound of photo-generated carrier, to improve the efficiency of light reaction；Metal ion can also be used as
The active site of light reaction, to be conducive to the progress of light-catalyzed reaction.However precious metal doping is improving light reaction efficiency
There is also some disadvantages simultaneously, for example noble metal is expensive, and itself containing toxic, these disadvantages significantly limit
The extensive production and application of this kind of catalyst, therefore, explore new method and material to improve the efficiency of light-catalyzed reaction very
It is urgent.
By two kinds of conduction bands and the suitable semiconductors coupling of valence band location with construct heterojunction structure be improve semiconductor light urge
Change another effective measures of reaction efficiency.Heterojunction structure can utilize the difference of semiconductor conduction band and valence band location, promote electricity
Son transfer inhibits the compound of electrons and holes, and then improves the efficiency of light reaction.It, can be with and by the formation of heterojunction structure
The stability for effectively improving the semiconductor of some self stabilities difference, to be conducive to its practical application.
Invention content
The purpose of the present invention is to provide a kind of composite photo-catalysts promoting photodissociation aquatic products hydrogen, for current material
Deficiency synthesizes a kind of stability and activity more preferably composite photo-catalyst, this is compound to return high catalyst that can be effectively facilitated
The separation of photo-generated carrier improves light reaction efficiency, is also prevented from the oxidation of catalyst itself, solves traditional photochemical catalyst
The disadvantages such as stability is poor, activity is low, quantum efficiency is low；And the composite photo-catalyst synthetic method is simple and practicable, yield is considerable, together
When its participate in photocatalytic reaction conditions it is mild, be conducive to photodissociation aquatic products hydrogen react in popularization and application.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of composite photo-catalyst promoting photodissociation aquatic products hydrogen, is by perovskite material NiTiO3Draw as co-catalyst
Enter in CdS, CdS/NiTiO is made3Composite photo-catalyst.Wherein, CdS is in NiTiO3On load capacity be 50wt%.
The preparation method of the composite photo-catalyst includes the following steps：
（1）Perovskite material NiTiO is prepared using sol-gal process3；
（2）Composite photo-catalyst CdS/NiTiO is prepared using condensation-circumfluence method3。
It is as follows：
（1）2.48g nickel acetate tetrahydrates are dissolved in 60mL ethylene glycol, 3.4mL butyl titanates, room is then added dropwise
Temperature is lower to stir 1h, and after gained precipitates washed, drying, 4h is calcined in 600 DEG C, air atmosphere to get NiTiO3；
（2）By NiTiO obtained by 0.5g3It is scattered in 70mL DMF（Dimethylformamide）In, 8.7mL is then added and contains thiocarbamide
The DMF solution of DMF solution and the 8.7mL 0.2mol/L containing cadmium acetate of 1mol/L, in 160 DEG C of condensing reflux 12h after being sufficiently mixed,
Gained precipitation is washed, dry to get the composite photo-catalyst.
Gained composite photo-catalyst can promote photocatalytic water catalysis production hydrogen reaction.
The remarkable result of the present invention is：
（1）The present invention is combined perovskite material with cadmium sulfide, is formed heterojunction structure, is promoted the transfer of light induced electron,
The compound of photo-generated carrier is inhibited, the efficiency of light-catalyzed reaction can be effectively improved.
（2）The present invention can effectively alleviate the photoetch phenomenon of cadmium sulfide, improve the stability of catalyst.
（3）The present invention is simple and practicable, and synthetic material yield is larger, does not contain noble metal, it is anti-in photocatalysis to be conducive to it
Answer the application of process.
Description of the drawings
Fig. 1 is CdS, NiTiO3、CdS/NiTiO3XRD compare collection of illustrative plates.
Fig. 2 is CdS, CdS/NiTiO3The comparison diagram of photodissociation aquatic products hydrogen activity.
Fig. 3 is the XRD spectrum of CdS before and after light-catalyzed reaction.
Fig. 4 is CdS/NiTiO before and after light-catalyzed reaction3XRD spectrum.
Specific implementation mode
In order to make content of the present invention easily facilitate understanding, With reference to embodiment to of the present invention
Technical solution is described further, but the present invention is not limited only to this.
1 NiTiO of embodiment3Preparation
By the nickel acetate tetrahydrate of 2.48g（Ni(CH3COO)2·4H2O）It is dissolved in 60mL ethylene glycol solutions, fully dissolves
Afterwards by 3.4mL butyl titanates（Ti(OC4H9)4）It is added dropwise in above-mentioned solution, stirs 1h, gained green precipitate at room temperature
It is washed with ethyl alcohol, after drying, 2h is calcined under 600 DEG C, air atmosphere to get NiTiO3。
2 CdS/NiTiO of embodiment3The preparation of composite catalyst
The NiTiO that 0.5g embodiments 1 are obtained3It is dispersed in 70mL DMF solutions, then by 8.7mL 0.2M containing cadmium acetate
The DMF solution of DMF solution and the 8.7mL 1M containing thiocarbamide be added in above-mentioned solution, stir 30min at room temperature, it is then that this is molten
Liquid condensing reflux 12h at 160 DEG C, products therefrom ethyl alcohol and deionized water are washed three times respectively, dry to get required
CdS/NiTiO3Composite photo-catalyst.
3 CdS/NiTiO of embodiment3Photodissociation aquatic products hydrogen activity is evaluated
2 gained CdS/NiTiO of embodiment3The photocatalytic water hydrogen generation efficiency evaluation experimental luxuriant and rich with fragrance Lay photodissociation on the berth of composite photo-catalyst
It is carried out in water installations, using Shimadzu 8A type gas chromatographic detections H2Yield.Experimentation is：By composite photocatalyst obtained by 50mg
Agent is added in 70mL deionized waters, and 10mL lactic acid is added as hole sacrifice agent, using xenon lamp as light source, and plus 420nm's
End filter plate, photocatalytic water reaction is carried out in photodissociation water installations, system vacuumizes, 5 DEG C of reaction temperature, then with λ > 420nm
Visible light to system carry out illumination, every H in 1h detecting systems2Content, reaction was completed after 5h.
Fig. 1 is CdS, NiTiO3、CdS/NiTiO3XRD compare collection of illustrative plates.As shown in Figure 1, NiTiO3/ CdS composite photocatalysts
CdS and NiTiO are contained in the XRD spectrum of agent3All characteristic peaks, this shows NiTiO3/ CdS composite photo-catalysts successfully close
At.
Fig. 2 is CdS, CdS/NiTiO3The active comparison diagram of photodissociation aquatic products hydrogen.From figure 2 it can be seen that compared to pure
CdS, CdS/NiTiO3Composite photo-catalyst can effectively improve the efficiency of photodissociation aquatic products hydrogen, this is mainly due to CdS and
NiTiO3Therebetween the heterojunction structure formed can effectively shift light induced electron, inhibit the compound of electrons and holes, to
The service life for extending light induced electron, to promote light-catalyzed reaction；Meanwhile with the progress of reaction, the reaction efficiency of CdS gradually drops
It is low, and CdS/NiTiO3It still then is able to keep higher reaction rate, this is mainly due to CdS there is the defect of photoetch,
Thus with the progress of reaction, reaction efficiency continuously decreases, and CdS/NiTiO3The heterojunction structure of formation can inhibit the light of CdS
Corrosion effect carries out to make light-catalyzed reaction be always maintained at higher rate.
Fig. 3, Fig. 4 are respectively CdS, CdS/NiTiO before and after light-catalyzed reaction3XRD spectrum.As seen from Figure 3, light is anti-
There is miscellaneous peak in CdS after answering, this shows after the reaction, and there are impurity in cadmium sulfide, and being compared by XRD confirms, miscellaneous peak institute
Corresponding substance is simple substance S, this shows that photoetch has occurred in CdS.And figure 4, it is seen that reaction after composite photocatalyst
Agent does not occur new impurity peaks compared to the composite photo-catalyst before reaction, this shows CdS/NiTiO3Middle formation hetero-junctions
Structure can promote the transfer of electronics, alleviate the photoetch of cadmium sulfide, to improve the stability of its structure.This result with two kinds
The variation of catalyst light reaction efficiency is consistent.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification should all belong to the covering scope of the present invention.
Claims (2)
1. a kind of preparation method of the composite photo-catalyst of promotion photodissociation aquatic products hydrogen, it is characterised in that：It is as follows：
（1）Nickel acetate is dissolved in ethylene glycol, butyl titanate is then added dropwise, stirs 1h at room temperature, gained is precipitated through washing
After washing, drying, 4h is calcined in 600 DEG C, air atmosphere to get NiTiO3；
（2）By gained NiTiO3It is scattered in dimethylformamide, thiocarbamide and cadmium acetate is then added, it will mixing after being sufficiently mixed
Solution condensing reflux 12h, gained precipitation are washed, dry to get the composite photo-catalyst；
CdS is in NiTiO3On load capacity be 50wt%.
2. the application of composite photo-catalyst made from a kind of method as described in claim 1, it is characterised in that：It is urged for photocatalytic water
Change production hydrogen reaction.
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| EP3424594A1 (en) * | 2017-07-06 | 2019-01-09 | Ecole Polytechnique Federale De Lausanne (Epfl) | Photocatalytic system comprising a titanium-based mof |
| CN110433828A (en) * | 2018-04-04 | 2019-11-12 | 乐清市华尊电气有限公司 | The catalytic composite material of photolysis water hydrogen |
| CN109647439A (en) * | 2019-01-07 | 2019-04-19 | 福州大学 | A kind of perovskite for photodissociation aquatic products hydrogen-solid solution composite photo-catalyst |
| CN109759069B (en) * | 2019-03-18 | 2021-04-27 | 福州大学 | Preparation and application of perovskite material for photocatalytic reduction of carbon dioxide |
| CN112657516B (en) * | 2021-01-06 | 2023-03-31 | 福州大学 | Direct Z-type photocatalyst and preparation method and application thereof |
| CN113368874B (en) * | 2021-05-26 | 2023-02-10 | 福建技术师范学院 | Up-conversion photocatalyst and preparation method and application thereof |
| CN113441144B (en) * | 2021-08-03 | 2023-06-16 | 河南农业大学 | Photocatalysis hydrogen production promoter, photocatalysis system and hydrogen production method |
| CN115591558A (en) * | 2022-09-19 | 2023-01-13 | 重庆大学（Cn） | Composite photocatalytic hydrogen production material NiTiO 3 /CdIn 2 S 4 Preparation method of (1) |
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| WO2015033306A1 (en) * | 2013-09-05 | 2015-03-12 | King Abdullah University Of Science And Technology | Tethered transition metals promoted photocatalytic system for efficient hydrogen evolutions |
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