CN106076365A - A kind of composite photo-catalyst promoting photodissociation Aquatic product hydrogen - Google Patents
A kind of composite photo-catalyst promoting photodissociation Aquatic product hydrogen Download PDFInfo
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- CN106076365A CN106076365A CN201610413543.5A CN201610413543A CN106076365A CN 106076365 A CN106076365 A CN 106076365A CN 201610413543 A CN201610413543 A CN 201610413543A CN 106076365 A CN106076365 A CN 106076365A
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- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 32
- 239000001257 hydrogen Substances 0.000 title claims abstract description 23
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 23
- 238000006303 photolysis reaction Methods 0.000 title claims abstract description 19
- 230000001737 promoting effect Effects 0.000 title claims abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 238000010992 reflux Methods 0.000 claims abstract description 4
- 239000000047 product Substances 0.000 claims description 18
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 14
- 238000006555 catalytic reaction Methods 0.000 claims description 12
- 230000001699 photocatalysis Effects 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910001868 water Inorganic materials 0.000 claims description 7
- 150000002431 hydrogen Chemical class 0.000 claims description 6
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims description 3
- LHQLJMJLROMYRN-UHFFFAOYSA-L cadmium acetate Chemical compound [Cd+2].CC([O-])=O.CC([O-])=O LHQLJMJLROMYRN-UHFFFAOYSA-L 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- MQRWBMAEBQOWAF-UHFFFAOYSA-N acetic acid;nickel Chemical compound [Ni].CC(O)=O.CC(O)=O MQRWBMAEBQOWAF-UHFFFAOYSA-N 0.000 claims 1
- 238000001035 drying Methods 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
- 238000006243 chemical reaction Methods 0.000 abstract description 18
- 239000003054 catalyst Substances 0.000 abstract description 10
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 2
- 239000002803 fossil fuel Substances 0.000 abstract 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 39
- 239000004065 semiconductor Substances 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
- 230000000694 effects Effects 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- -1 NiTiO3 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 229940078487 nickel acetate tetrahydrate Drugs 0.000 description 2
- OINIXPNQKAZCRL-UHFFFAOYSA-L nickel(2+);diacetate;tetrahydrate Chemical compound 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
- 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
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 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
- 230000007613 environmental effect Effects 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
- 238000004519 manufacturing process Methods 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 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
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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-catalyst promoting photodissociation Aquatic product hydrogen, it uses sol-gal process to synthesize perovskite material NiTiO3, then by NiTiO3As promoter, introduce in CdS by condensing reflux method, prepare CdS/NiTiO3Composite photo-catalyst.This composite catalyst can pass through CdS and NiTiO3Between the heterojunction structure that formed, promote the transfer of photo-generated carrier, reduce light induced electron and the compound probability in hole, thus significantly improve the efficiency of photodissociation Aquatic product hydrogen, and the shortcoming that can alleviate the photoetch of traditional photocatalyst existence.Meanwhile, this composite photo-catalyst preparation method is simple, and reaction condition is gentle, is developing the alternative energy source of Fossil fuel and is efficiently utilizing the aspects such as solar energy to have broad application prospects.
Description
Technical field
The invention belongs to photodissociation Aquatic product hydrogen technical field, be specifically related to a kind of composite photocatalyst promoting photodissociation Aquatic product hydrogen
Agent.
Background technology
The energy crisis faced in the face of the current whole world and the double challenge of environmental pollution, people are trying to explore exploitation clearly
Find during clean new forms of energy that photocatalysis technology has the advantages such as low cost, reaction condition gentleness, environmental friendliness and energy consumption are little,
Wherein photodissociation Aquatic product hydrogen has obtained studying widely.Utilize photodissociation Aquatic product 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, its use will not cause new pollution problem.Compared to biography
The electrolysis Aquatic product hydrogen reaction of system, the low cost of photodissociation Aquatic product hydrogen, reaction condition is gentle, has a extensive future, to exploitation fossil combustion
Material alternative energy source and solution problem of environmental pollution tool have very important significance.
TiO is just utilized as far back as the seventies in last century2Carry out the research of photodissociation Aquatic product hydrogen, wherein utilize quasiconductor as light
Catalyst carries out light-catalyzed reaction and has been obtained for substantial amounts of research.Traditional semiconductor light-catalyst includes TiO2、ZnO、
SnO2, CdS etc..But traditional semiconductor light-catalyst is owing to existing, and quantum efficiency is low, absorbing properties is poor, structural instability
Etc. shortcoming, cause its photocatalysis efficiency low, limit it and produce on a large scale and application.Researcher is carried by various methods
High conductor photocatalysis reaction efficiency, most common of which method is precious metal doping.Half can be changed by precious metal doping
The series of physical chemical property such as the bandwidth of conductor, extinction property, in light reaction procedure, the metal of doping can be as freedom
The capture site of electronics, thus suppress the compound, to improve the efficiency of photoreaction of photo-generated carrier；Metal ion can also conduct
The avtive spot of photoreaction, thus the carrying out of beneficially light-catalyzed reaction.But precious metal doping is improving photoreaction efficiency
There is also the expensive of some shortcomings, such as noble metal simultaneously, and self is containing toxic, these shortcomings significantly limit
The widespread production of this kind of catalyst and application, therefore, explore new method and material to improve the efficiency of light-catalyzed reaction very
Urgent.
It is to improve semiconductor light to urge by two kinds of conduction bands and the suitable semiconductors coupling of valence band location to construct heterojunction structure
Change the another kind of effective measures of reaction efficiency.Heterojunction structure can utilize the difference of semiconductor conduction band and valence band location, promotes electricity
Being combined of son transfer, suppression electronics and hole, and then improve the efficiency of photoreaction.And by the formation of heterojunction structure, permissible
It is effectively improved the stability of the quasiconductor of some self stability differences, thus is conducive to its actual application.
Summary of the invention
It is an object of the invention to provide a kind of composite photo-catalyst promoting photodissociation Aquatic product hydrogen, it is for current material
Deficiency, synthesizes a kind of stability and active more excellent composite photo-catalyst, and this is combined returns high catalyst to be effectively facilitated
The separation of photo-generated carrier, improves photoreaction efficiency, it is also possible to prevent the oxidation of catalyst self, solves tradition photocatalyst
The shortcomings such as poor stability, activity is low, quantum efficiency is low；And this composite photo-catalyst synthetic method is simple, yield is considerable, with
Time its photocatalytic reaction conditions participated in gentle, be conducive to the popularization and application in photodissociation Aquatic product hydrogen reacts.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of composite photo-catalyst promoting photodissociation Aquatic product hydrogen, it is by perovskite material NiTiO3Introduce as promoter
In CdS, prepare CdS/NiTiO3Composite photo-catalyst.Wherein, CdS is at NiTiO3On load capacity be 50wt%.
The preparation method of described composite photo-catalyst comprises the following steps:
(1) sol-gal process is utilized to prepare perovskite material NiTiO3；
(2) condensation-circumfluence method is utilized to prepare composite photo-catalyst CdS/NiTiO3。
It specifically comprises the following steps that
(1) 2.48g nickel acetate tetrahydrate is dissolved in 60mL ethylene glycol, is then added dropwise over 3.4mL butyl titanate, under room temperature
Stirring 1h, gained precipitation is scrubbed, dried, in 600 DEG C, air atmosphere is calcined 4h, obtain NiTiO3；
(2) by 0.5g gained NiTiO3It is scattered in 70mL DMF(dimethylformamide) in, it is subsequently adding 8.7mL containing thiourea
The DMF solution of 1mol/L and the 8.7mL DMF solution containing cadmium acetate 0.2mol/L, in 160 DEG C of condensing reflux 12h after being sufficiently mixed,
Gained precipitation is scrubbed, dry, obtains described composite photo-catalyst.
Gained composite photo-catalyst can promote that hydrogen reaction is produced in photocatalytic water catalysis.
The remarkable result of the present invention is:
(1) perovskite material is combined by the present invention with cadmium sulfide, forms heterojunction structure, promotes the transfer of light induced electron, suppression
Photo-generated carrier compound, it is possible to be effectively improved the efficiency of light-catalyzed reaction.
(2) present invention can alleviate the photoetch phenomenon of cadmium sulfide effectively, improves the stability of catalyst.
(3) present invention is simple, and synthetic material yield is relatively big, does not contains noble metal, is conducive to it anti-in photocatalysis
Answer the application of process.
Accompanying drawing explanation
Fig. 1 is CdS, NiTiO3、CdS/NiTiO3XRD contrast collection of illustrative plates.
Fig. 2 is CdS, CdS/NiTiO3The comparison diagram of photodissociation Aquatic product hydrogen activity.
Fig. 3 is the XRD figure spectrum of CdS before and after light-catalyzed reaction.
Fig. 4 is CdS/NiTiO before and after light-catalyzed reaction3XRD figure spectrum.
Detailed description of the invention
In order to make content of the present invention easily facilitate understanding, below in conjunction with detailed description of the invention to of the present invention
Technical scheme is described further, but the present invention is not limited only to this.
Embodiment 1 NiTiO3Preparation
By the nickel acetate tetrahydrate (Ni (CH of 2.48g3COO)2·4H2O) it is dissolved in 60mL ethylene glycol solution, will after fully dissolving
3.4mL butyl titanate (Ti (OC4H9)4) be added dropwise in above-mentioned solution, stir 1h, gained green precipitate second under room temperature
Alcohol washing, dried, in 600 DEG C, calcine 2h under air atmosphere, obtain NiTiO3。
Embodiment 2 CdS/NiTiO3Composite catalyst preparation
The NiTiO that 0.5g embodiment 1 is obtained3It is dispersed in 70mL DMF solution, then by 8.7mL containing cadmium acetate 0.2M's
DMF solution and the 8.7mL DMF solution containing thiourea 1M join in above-mentioned solution, stir 30min, then by this solution under room temperature
Condensing reflux 12h at 160 DEG C, products therefrom ethanol and deionized water wash three times respectively, are dried, obtain required CdS/
NiTiO3Composite photo-catalyst.
Embodiment 3 CdS/NiTiO3Photodissociation Aquatic product hydrogen activity is evaluated
Embodiment 2 gained CdS/NiTiO3The photocatalytic water hydrogen generation efficiency evaluation experimental luxuriant and rich with fragrance Lay photocatalytic water dress on the berth of composite photo-catalyst
Put and carry out, use Shimadzu 8A type gas chromatographic detection H2Yield.Experimentation is: added by 50mg gained composite photo-catalyst
Enter in 70mL deionized water, and add 10mL lactic acid as hole sacrifice agent, with xenon lamp as light source, and plus the cut-off of 420nm
Filter plate, carries out photocatalytic water reaction on photocatalytic water device, system evacuation, reaction temperature 5 DEG C, then with λ ＞ 420nm can
See that light carries out illumination to system, H in 1h detecting system2Content, after 5h terminate reaction.
Fig. 1 is CdS, NiTiO3、CdS/NiTiO3XRD contrast collection of illustrative plates.As it is shown in figure 1, NiTiO3/ CdS composite photocatalyst
The XRD figure spectrum of agent contains CdS and NiTiO3All characteristic peaks, this shows NiTiO3/ CdS composite photo-catalyst successfully closes
Become.
Fig. 2 is CdS, CdS/NiTiO3The active comparison diagram of photodissociation Aquatic product hydrogen.From figure 2 it can be seen that compared to pure
CdS, CdS/NiTiO3Composite photo-catalyst can be effectively improved the efficiency of photodissociation Aquatic product hydrogen, this mainly due to CdS and
NiTiO3Therebetween the heterojunction structure formed can shift the compound of light induced electron, suppression electronics and hole effectively, thus
Extend the life-span of light induced electron, to promote light-catalyzed reaction；Meanwhile, along with the carrying out of reaction, the reaction efficiency of CdS gradually drops
Low, and CdS/NiTiO3Then still being able to keep higher reaction rate, this also exists the defect of photoetch mainly due to CdS,
Thus with the carrying out of reaction, reaction efficiency is gradually lowered, and CdS/NiTiO3The heterojunction structure formed can suppress the light of CdS
Corrosion effect, so that light-catalyzed reaction is always maintained at higher speed and carries out.
Fig. 3, Fig. 4 are respectively CdS, CdS/NiTiO before and after light-catalyzed reaction3XRD figure spectrum.As seen from Figure 3, light is anti-
CdS after should occurs in that miscellaneous peak, and this shows after the reaction, there is impurity in cadmium sulfide, is confirmed by XRD comparison, its miscellaneous peak institute
Corresponding material is simple substance S, and this shows that CdS there occurs photoetch.And figure 4, it is seen that reacted composite photocatalyst
There is not new impurity peaks compared to the composite photo-catalyst before reaction in agent, and this shows CdS/NiTiO3Middle formation hetero-junctions
Structure can promote the transfer of electronics, alleviates the photoetch of cadmium sulfide, thus improves the stability of its structure.This result with two kinds
The change of catalyst photoreaction efficiency is consistent.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modify, all should belong to the covering scope of the present invention.
Claims (5)
1. the composite photo-catalyst promoting photodissociation Aquatic product hydrogen, it is characterised in that: by perovskite material NiTiO3As co-catalysis
Agent introduces in CdS, prepares CdS/NiTiO3Composite photo-catalyst.
Composite photo-catalyst the most according to claim 1, it is characterised in that: CdS is at NiTiO3On load capacity be 50wt%.
3. the preparation method of the composite photo-catalyst of a promotion photodissociation Aquatic product hydrogen as claimed in claim 1, it is characterised in that: bag
Include following steps:
(1) sol-gal process is utilized to prepare perovskite material NiTiO3；
(2) condensation-circumfluence method is utilized to prepare composite photo-catalyst CdS/NiTiO3。
Preparation method the most according to claim 3, it is characterised in that: specifically comprise the following steps that
(1) being dissolved in ethylene glycol by nickel acetate, be then added dropwise over butyl titanate, stir 1h under room temperature, gained precipitates through washing
Wash, after drying, in 600 DEG C, air atmosphere calcines 4h, obtain NiTiO3；
(2) by gained NiTiO3It is scattered in dimethylformamide, is subsequently adding thiourea and cadmium acetate, will mixing after being sufficiently mixed
Solution condensing reflux 12h, gained precipitation scrubbed, be dried, both described composite photo-catalyst.
5. the application of a composite photo-catalyst as claimed in claim 1, it is characterised in that: produce hydrogen for photocatalytic water catalysis anti-
Should.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3424594A1 (en) * | 2017-07-06 | 2019-01-09 | Ecole Polytechnique Federale De Lausanne (Epfl) | Photocatalytic system comprising a titanium-based mof |
| 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 |
| CN109759069A (en) * | 2019-03-18 | 2019-05-17 | 福州大学 | A kind of preparation and application of the perovskite material for photocatalytic reduction of carbon oxide |
| 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 |
| CN112657516A (en) * | 2021-01-06 | 2021-04-16 | 福州大学 | Direct Z-type photocatalyst and preparation method and application thereof |
| CN113368874A (en) * | 2021-05-26 | 2021-09-10 | 福建技术师范学院 | Up-conversion photocatalyst and preparation method and application thereof |
| CN113441144A (en) * | 2021-08-03 | 2021-09-28 | 河南农业大学 | Photocatalytic hydrogen production cocatalyst, photocatalytic 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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| CN109759069B (en) * | 2019-03-18 | 2021-04-27 | 福州大学 | Preparation and application of perovskite material for photocatalytic reduction of carbon dioxide |
| CN112657516A (en) * | 2021-01-06 | 2021-04-16 | 福州大学 | Direct Z-type photocatalyst and preparation method and application thereof |
| CN113368874A (en) * | 2021-05-26 | 2021-09-10 | 福建技术师范学院 | Up-conversion photocatalyst and preparation method and application thereof |
| CN113441144A (en) * | 2021-08-03 | 2021-09-28 | 河南农业大学 | Photocatalytic hydrogen production cocatalyst, photocatalytic system and hydrogen production method |
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