CN102616739A - Device and application for photocatalytic water decomposition - Google Patents

Device and application for photocatalytic water decomposition Download PDF

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CN102616739A
CN102616739A CN2012100994751A CN201210099475A CN102616739A CN 102616739 A CN102616739 A CN 102616739A CN 2012100994751 A CN2012100994751 A CN 2012100994751A CN 201210099475 A CN201210099475 A CN 201210099475A CN 102616739 A CN102616739 A CN 102616739A
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anode
water decomposition
photocathode
titanium
iridium
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李永丹
李阳
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Tianjin University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
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    • Y02P20/133Renewable energy sources, e.g. sunlight

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Abstract

The invention discloses a device and application for photocatalytic water decomposition. An optical receiving part is a solar cell according with international standards, a photocathode is a Ni-Mo alloy material prepared by using an electro-deposition method, and a photoanode is a metal titanium anode, a ruthenium-iridium-titanium anode, a tantalum-iridium-titanium anode or a tantalum-ruthenium-iridium-titanium anode. According to the invention, through using the excellent catalytic properties of the photocathode and the photoanode, the overpotential of water decomposition is greatly reduced so as to obtain a high-activity and high-stability photocatalytic complete water decomposition system which can generate pure hydrogen and oxygen in visible light or natural light, thereby efficiently converting solar energy into chemical energy.

Description

A kind of device of photochemical catalysis water decomposition and application
Technical field
The present invention relates to photocatalysis field, more particularly, relate to a kind of device and application of photochemical catalysis water decomposition.
Background technology
Along with the exhaustion day by day of fossil oil, and the serious environmental hazard that brings, seeking a kind of alternative clean reproducible energy is human eager desire.Sun power is a kind of inexhaustible natural energy source, utilizes solar electrical energy generation to become reality already.Utilizing sun power in addition is a focus direction of recent studies with water decomposition for hydrogen and oxygen, and the advantage of doing like this is that energy is more easily than getting up with electric energy or thermal energy storage with the hydrogen stores; Hydrogen mole calorific value high (≈ 140kJ/g), energy storage capacity is big, clean environment firendly, toxicological harmless is a kind of fuel and energy with very big potential advantages; And, by water generates hydrogen, regenerating water after the burning, its net result is that luminous energy changes for chemical energy, if can realize that photodissociation water obtains hydrogen and then can reach energy sustainability; Hydrogen is not only a kind of high-octane clean energy that storing; And also be a kind of very important chemical material; Like synthetic ammonia, methyl alcohol, and participate in reactions such as hydrogenation, desulfurization, denitrogenation, demetalization, particularly can also hydrogenating reduction greenhouse gases carbonic acid gas.So, find a kind of favourable complete water decomposition mode to become key.1971, Japanese scientist Fujishima and Honda reported first titanium oxide under UV-irradiation, the science and technology that minimum impressed voltage just can decompose pure water in the cooperation finds that the new page of photocatalysis field in modern age has been started in this discovery.For water of decomposition fully under the help that does not have impressed voltage, in nearly 40 years time, innumerable photodissociation water catalyzer is developed, and reaction mechanism and reaction model are also constantly made up and upgrade.Typical photodissociation water catalyzer has TiO 2, CdS, (Ga 1-xZn x) (N 1-xO x), TaON, SrTiO 3Deng, also have numerous in order to overcome single compound photodissociation water catalyzer such as Pt/TiO that plants the photocatalyst deficiency and research and develop 2, CdS/TiO 2, ZnO/CdS, TiO 2/ RuO 2Deng.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of water decomposition system of high-efficiency corrosion-resistant is provided, let hydrogen and oxygen on photocathode and light anode, produce respectively, alleviate the later separation burden.
The object of the invention is achieved through following technical proposals:
A kind of device of photochemical catalysis water decomposition comprises light-receiving member, light anode and photocathode, wherein:
Light-receiving member can be selected solar cell or the solar battery sheet that meets GB or international standard for use, and for example the P of Uni-solar company type battery sheet is used to receive luminous energy; The positive pole of said light-receiving member links to each other with the light anode, and negative pole links to each other with photocathode;
Said smooth anode adopts metal titanium as anode; Or metallic titanium plate is as matrix, with transition metal with (or) its oxide compound is as the titanium anode of load coating, like tantalum iridium titanium, ruthenium-iridium-tantalum, ruthenium iridium tin titanium anode; It is stable to have chemical property; Good conductivity reduces advantages such as overpotential, and for example can be from the Baoji auspicious prosperous titanium industry ltd buys;
Said photocathode adopts the Ni-Mo alloy material of electrodip process preparation; Configuration contains Ni, and the Mo metal ion solution is an anode with the inert metal; Choose the suitable metal material as matrix and as negative electrode; Add volts DS and carry out electrodeposit reaction to obtain depositing the material of Ni-Mo alloy presoma, then with its be immersed in carry out activation in the alkaline environment after, link to each other with light-receiving member again; Wherein choose as the metallic substance of matrix and need use suds, after deionized water, absolute ethyl alcohol are cleaned successively; Carrying out electrodeposit reaction behind the natural air drying, when the solution that the configuration galvanic deposit needs, can be according to Ni in the final alloy; The ratio that Mo needs, in general, Ni αMo βIn the alloy, 0<α<1,0<β<1; And both sums are 1; Adjustment adds the type or the quantity of salt, and reference is Reece, S.Y.; J.A.Hamel, et al. (2011). " Wireless Solar Water Splitting Using Silicon-Based Semiconductors and Earth-Abundant Catalysts. " Science 334 (6056): 645-648.
In use, at first the current-carrying part of light-receiving member (solar cell) is carried out clean after, utilize lead, scolding tin, conductive tape or conductive resin that positive pole is linked to each other negative pole and Ni with the titanium anode of transition metal load αMo βPhotocathode links to each other; Be immersed in the electrolyte solution (the potassium borate solution of 50g/L for example; Certain specific conductivity need be provided); Receive outside luminous energy (for example visible light) through light-receiving member (solar cell),, obtain oxygen and hydrogen respectively at anode and negative electrode to realize the decomposition of water under the photochemical catalysis.
Description of drawings
Fig. 1 photochemical catalysis water decomposition structural representation, 1-solar cell wherein, the 2-negative pole, 3-is anodal, 4-Ni-Mo alloy photocathode, 5-light anode.
The scanning electron microscope image of Fig. 2 Ni-Mo alloy photocathode catalyzer, Electronic Speculum model Hitachi S-4800.
Fig. 3 light anode material scanning electron microscope image, a-tantalum iridium titanium anode surface wherein, b-ruthenium-iridium-tantalum anode surface, c-tantalum iridium titanium anode cross section, d-ruthenium-iridium-tantalum anode cross section, Electronic Speculum model Hitachi S-4800.
Fig. 4 cyclic voltammetry curve: a-tantalum iridium titanium anode, b-ruthenium-iridium-tantalum anode, c-ruthenium iridium tin titanium anode, d-titanium anode, negative electrode are Ni 0.62Mo 0.38Alloy.
Embodiment
Further specify technical scheme of the present invention below in conjunction with specific embodiment.
Embodiment 1
Take by weighing the 7.477g sodium hydrogencarbonate, the 3.457g trisodium phosphate, 0.951g nickelous nitrate, 0.177g Sodium orthomolybdate are dissolved in the 100ml deionized water, vigorous stirring, ultra-sonic dispersion makes it to dissolve fully, drips 3 Hydrazine Hydrate 80s, and it is for use to stir.One of the nickel foam of the suitable size of clip is used suds, and deionized water, absolute ethyl alcohol are cleaned the back natural air drying successively, as anode substrate.One of clean platinum filament is as negative electrode.Add 10V vs.Ag/AgCl (reference electrode) at two interpolars and continue 1800s at least, make the solution metal ion deposition complete.The photocathode presoma that galvanic deposit is finished places the potassium hydroxide solution 24h of 10M (10mol/L), cleans to obtain consisting of Ni after air-dry 0.82Mo 0.18Photocathode material.With Ni 0.82Mo 0.18Use conductive resin (or lead) to be connected to the negative pole and positive pole of solar cell respectively with tantalum iridium titanium anode, insert in the potassium borate electrolyte solution of 50g/L, under visible light, can accomplish the water decomposition reaction.
Embodiment 2
Take by weighing the 7.477g sodium hydrogencarbonate, the 3.457g trisodium phosphate, 0.951g nickelous nitrate, 0.484g Sodium orthomolybdate are dissolved in the 100ml deionized water, vigorous stirring, ultra-sonic dispersion makes it to dissolve fully, drips 3 Hydrazine Hydrate 80s, and it is for use to stir.One of the nickel foam of the suitable size of clip is used suds, and deionized water, absolute ethyl alcohol are cleaned the back natural air drying successively, as anode substrate.One of clean platinum filament is as negative electrode.Add 10V vs.Ag/AgCl at two interpolars and continue 1800s at least, make the solution metal ion deposition complete.The photocathode presoma that galvanic deposit is finished places the potassium hydroxide solution 24h of 10M, cleans to obtain consisting of Ni after air-dry 0.62Mo 0.38Photocathode material.With Ni 0.62Mo 0.38Use conductive resin (or lead) to be connected to the negative pole and positive pole of solar cell respectively with the ruthenium-iridium-tantalum anode, insert in the potassium borate electrolyte solution of 50g/L, under visible light, can accomplish the water decomposition reaction.
Embodiment 3
Take by weighing the 7.477g sodium hydrogencarbonate, the 3.457g trisodium phosphate, 0.951g nickelous nitrate, 1.001g Sodium orthomolybdate are dissolved in the 100ml deionized water, vigorous stirring, ultra-sonic dispersion makes it to dissolve fully, drips 3 Hydrazine Hydrate 80s, and it is for use to stir.One of the nickel foam of the suitable size of clip is used suds, and deionized water, absolute ethyl alcohol are cleaned the back natural air drying successively, as anode substrate.One of clean platinum filament is as negative electrode.Add 10V vs.Ag/AgCl at two interpolars and continue 1800s at least, make the solution metal ion deposition complete.The photocathode presoma that galvanic deposit is finished places the potassium hydroxide solution 24h of 10M, cleans to obtain consisting of Ni after air-dry 0.44Mo 0.56Photocathode material.With Ni 0.44Mo 0.56Use conductive resin (or lead) to be connected to the negative pole and positive pole of solar cell respectively with ruthenium iridium tin titanium anode, insert in the potassium borate electrolyte solution of 50g/L, under visible light, can accomplish the water decomposition reaction.
Embodiment 4
Take by weighing the 7.477g sodium hydrogencarbonate, the 3.457g trisodium phosphate, 0.951g nickelous nitrate, 2.005g Sodium orthomolybdate are dissolved in the 100ml deionized water, vigorous stirring, ultra-sonic dispersion makes it to dissolve fully, drips 3 Hydrazine Hydrate 80s, and it is for use to stir.One of the nickel foam of the suitable size of clip is used suds, and deionized water, absolute ethyl alcohol are cleaned the back natural air drying successively, as anode substrate.One of clean platinum filament is as negative electrode.Add 10V vs.Ag/AgCl at two interpolars and continue 1800s at least, make the solution metal ion deposition complete.The photocathode presoma that galvanic deposit is finished places the potassium hydroxide solution 24h of 10M, cleans to obtain consisting of Ni after air-dry 0.28Mo 0.72Photocathode material.With Ni 0.28Mo 0.72Use conductive resin (or lead) to be connected to the negative pole and positive pole of solar cell respectively with the metal titanium anode, insert in the potassium borate electrolyte solution of 50g/L, under visible light, can accomplish the water decomposition reaction.
In the foregoing description according to required Ni αMo βIn the alloy; The numerical value of α, β need dispose corresponding solution; Adopt volts DS to carry out the electrochemical deposition reaction, belong to the deposition effect of element, keep voltage for some time (1800s at least for guaranteeing GOLD FROM PLATING SOLUTION; Be equivalent to galvanic deposit half a hour), can realize that GOLD FROM PLATING SOLUTION belongs to element and all is deposited on the nickel foam substrate basically.Power spectrum probe (the EDS probe of U.S. Edax company) through Electronic Speculum model Hitachi S-4800; After utilizing the volts DS galvanic deposit of iron plate under the identical preparation condition as anode substrate; And it is as shown in the table to carry out EDS ultimate analysis (element percentage mol%) through the potassium hydroxide solution activatory sample of 10M, realizes the ratio of element in the alloy of design in advance basically.
Ni Mo
Embodiment 1 82.1 17.9
Embodiment 2 62.3 37.7
Embodiment 3 43.8 56.2
Embodiment 4 28.2 71.8
Be utilized as Beijing and freely open up Labsolar H 2Test macro under visible light, carry out water decomposition reaction, as shown in the table:
Produced hydrogen activity (hydrogen volume, milliliter) in 5 hours
Embodiment 1 4.56
Embodiment 2 5.74
Embodiment 3 5.23
Embodiment 4 3.97
With Ni 0.62Mo 0.38Alloy is that negative electrode is an example, utilizes Beijing freely to open up Labsolar H 2Test macro under visible light, carry out water decomposition reaction, with the explanation device the product hydrogen activity that carries out the photochemical catalysis hydrolysis with produce oxygen activity, as shown in the table:
Figure BDA0000151049460000052
(negative electrode is Ni to embodiment through the cyclic voltammetric method 0.62Mo 0.38Alloy) cyclic voltammetric performance is tested (the electrochemical workstation model of utilization is Gamry Reference 600); Shown in accompanying drawing 4; Changed reference electrode Ag/AgCl the unit of standard hydrogen electrode into, the standard potential>1.23V of theoretic water decomposition can see; Water decomposition device of the present invention can effectively reduce the overpotential of water of decomposition, makes it less than 1.10V.
More than the present invention has been done exemplary description; Should be noted that; Under the situation that does not break away from core of the present invention, the replacement that is equal to that any simple distortion, modification or other those skilled in the art can not spend creative work all falls into protection scope of the present invention.

Claims (5)

1. the device of a photochemical catalysis water decomposition comprises light-receiving member, light anode and photocathode, and wherein said light-receiving member is used to receive luminous energy, and its positive pole links to each other with the light anode, and negative pole links to each other with photocathode; It is characterized in that:
Said smooth anode adopts metal titanium as anode, or metallic titanium plate is as matrix, with transition metal with (or) its oxide compound is as the titanium anode of load coating;
Said photocathode adopts the Ni-Mo alloy material of electrodip process preparation, and said alloy material is Ni αMo βAlloy, 0<α<1,0<β<1, and both sums are 1.
2. the device of a kind of photochemical catalysis water decomposition according to claim 1 is characterized in that, said smooth anode is titanium anode, tantalum iridium titanium anode, ruthenium-iridium-tantalum anode or ruthenium iridium tin titanium anode.
3. the device of a kind of photochemical catalysis water decomposition according to claim 1; It is characterized in that said photocathode adopts the electrodip process preparation: configuration contains Ni, Mo metal ion solution; With the inert metal is anode; Choose the suitable metal material as matrix and as negative electrode, add volts DS and carry out electrodeposit reaction, it is immersed in carries out activation in the alkaline environment then to obtain depositing the material of Ni-Mo alloy presoma.
4. like the application of device in the photochemical catalysis water decomposition of the described photochemical catalysis water decomposition of one of claim 1-3, it is characterized in that what water of decomposition used is the electrolytical aqueous solution.
5. application according to claim 4 is characterized in that, the potassium borate aqueous solution that the said electrolytical aqueous solution is 50g/L.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104760932A (en) * 2015-03-25 2015-07-08 水沐清源(天津)能源环境技术有限公司 Photocatalytic water decomposition hydrogen production plant
CN104760931A (en) * 2015-03-17 2015-07-08 北京化工大学 Reaction device and application of photocatalytic hydrogen production from water
CN106319577A (en) * 2015-07-02 2017-01-11 阿克陶科邦锰业制造有限公司 Energy-saving and environment-friendly anode plate
CN109261190A (en) * 2018-11-03 2019-01-25 东华大学 A kind of Ni-Mo/g-C3N4 composite photo-catalyst and its preparation and application
CN110605138A (en) * 2019-10-09 2019-12-24 江苏泷膜环境科技有限公司 Preparation method and application of tantalum oxygen nitrogen/foamed nickel photocatalytic contact oxide film
CN113428835A (en) * 2021-06-24 2021-09-24 清华大学 Method for preparing hydrogen by photocatalysis by using lignocellulose

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104760931A (en) * 2015-03-17 2015-07-08 北京化工大学 Reaction device and application of photocatalytic hydrogen production from water
CN104760932A (en) * 2015-03-25 2015-07-08 水沐清源(天津)能源环境技术有限公司 Photocatalytic water decomposition hydrogen production plant
CN106319577A (en) * 2015-07-02 2017-01-11 阿克陶科邦锰业制造有限公司 Energy-saving and environment-friendly anode plate
CN109261190A (en) * 2018-11-03 2019-01-25 东华大学 A kind of Ni-Mo/g-C3N4 composite photo-catalyst and its preparation and application
CN110605138A (en) * 2019-10-09 2019-12-24 江苏泷膜环境科技有限公司 Preparation method and application of tantalum oxygen nitrogen/foamed nickel photocatalytic contact oxide film
CN113428835A (en) * 2021-06-24 2021-09-24 清华大学 Method for preparing hydrogen by photocatalysis by using lignocellulose

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