CN108479791A - A kind of Co/Ni-MoO2The preparation method of combined electrolysis water catalyst - Google Patents

A kind of Co/Ni-MoO2The preparation method of combined electrolysis water catalyst Download PDF

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Publication number
CN108479791A
CN108479791A CN201810099774.2A CN201810099774A CN108479791A CN 108479791 A CN108479791 A CN 108479791A CN 201810099774 A CN201810099774 A CN 201810099774A CN 108479791 A CN108479791 A CN 108479791A
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moo
electrolysis water
preparation
water catalyst
catalyst
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CN201810099774.2A
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CN108479791B (en
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陈志明
杨晓东
王晓梅
徐波
李村成
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University of Jinan
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University of Jinan
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85Chromium, molybdenum or tungsten
    • B01J23/88Molybdenum
    • B01J23/883Molybdenum and nickel
    • B01J35/33
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/04Mixing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • B01J37/082Decomposition and pyrolysis
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/02Hydrogen or oxygen
    • C25B1/04Hydrogen or oxygen by electrolysis of water
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • 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

Abstract

The present invention relates to a kind of Co/Ni MoO2Combined electrolysis water catalyst for preparing hydrogen and preparation method thereof, belongs to technical field of inorganic nano-material preparation.The present invention prepares Co/Ni MoO as presoma using tetra- kinds of cobalt nitrate, nickel nitrate, ammonium molybdate and F127 substances by the method heated after ground and mixed2Catalyst.It is as follows:Dough presoma is prepared by the method for mixed grinding using cobalt nitrate, nickel nitrate, ammonium molybdate and F127 as reactant first;It is further taken up in order of priority to heat under 70 degrees Celsius and 300 degrees Celsius and Co/Ni MoO is made2Composite catalyst.

Description

A kind of Co/Ni-MoO2The preparation method of combined electrolysis water catalyst
Technical field
The present invention relates to a kind of Co/Ni-MoO2Combined electrolysis water catalyst for preparing hydrogen and preparation method thereof, belongs to inorganic nano Field of material technology.
Background technology
With the continuous consumption of conventional fossil fuel and increasingly sharpening for environmental pollution, regeneration clean energy resource receives more Carry out more extensive concern.Hydrogen Energy has the characteristics that energy density height, clean environment firendly, it is considered to be excellent fossil fuel substitutes Product.Hydrogen can be easily prepared by the method for electrolysis water, meets practical application request.But since water-splitting reaction is Cells with non-spontaneous reactions, gibbs free energy change are up to 237kJ/mol so that the power consumption during electrolysis water is larger.Platinum family Metal is often used as the catalyst of electrolysis water to reduce the power consumption during water-splitting, but its price is prohibitively expensive, nothing Method is widely used.Thus, cheap electrolysis water catalyst is developed, for the energy consumption during reduction electrolysis water, is subtracted The dosage of the noble metals such as few platinum, the cost for reducing electrolysis water have great importance.
MoO2With the satisfactory electrical conductivity close to metal, and chemical stability is high, cheap, is expected to become a kind of important Electrolysis water catalyst.But during electrolysis water, MoO2The very strong metal hydride of bond energy is formed between meeting and hydroperoxyl radical Object, to reduce reaction rate.By transition metal modification to MoO2In matrix, transition metal-MoO is prepared2Composite catalyst is Solve the problems, such as this common methods.For example, L.J. Yang et al. by Co by being doped to MoO2Method in nano wire improves Catalytic performance(Nano Energy 41 (2017) 772-779);B.W. Ren et al. reports the MoO of Ni doping2Nanometer Line has good electrolysis water H2-producing capacity and stability(J. Mater. Chem. A 5 (2017) 24453-24461). But although currently having more passes through containing transition metal to MoO2Middle electrolysis water catalyst of the preparation with excellent performance Report, but associated catalysts preparation method is often more complicated, catalyst yield is often relatively low.Exploitation it is a kind of it is of low cost, Transition metal-MoO simple and easy to do, suitable for large-scale application2The preparation method of composite catalyst has great importance.
Invention content
The purpose of the present invention is to provide a kind of of low cost, easy-to-use Co/Ni-MoO2Combined electrolysis water hydrogen manufacturing is urged The preparation method of agent.This preparation method provided by the invention, simple process and low cost is honest and clean, and prepared Co/Ni- MoO2With excellent electrolysis aquatic products hydrogen catalysis performance, there is higher actual application value.
The purpose of the present invention is what is be achieved through the following technical solutions, a kind of Co/Ni-MoO2Combined electrolysis water producing hydrogen, catalyzing The preparation method of agent, includes the following steps:
1)Weigh Co (NO respectively according to certain mol proportion3)2 .6H2O, Ni(NO3)2 .6H2O, (NH4)2MoO4(EO)106(PO)70 (EO)106In triblock polymer (Pluronic F127) to mortar;
2)Step 1 gained mixture is ground 20 minutes at room temperature, obtains dough solid;
3)Step 2 gained dough solid is transferred in quartz boat, and is positioned in Muffle furnace and obtains Co/Ni- after heating MoO2Combined electrolysis water catalyst for preparing hydrogen.
Beneficial effects of the present invention:
(1)The present invention provides a kind of New Co/Ni-MoO2The preparation method of combined electrolysis water catalyst for preparing hydrogen, i.e., it is logical first It crosses the method that grinding is simply mixed and prepares doughy precursor mixture, then carry out heating reaction to it and can be prepared by product. Preparation method is simple to operation, does not need special equipment, of low cost and prepared suitable for extensive, can meet practical application Demand;
(2)Co/Ni-MoO prepared by the present invention2Composite catalyst has excellent water electrolysis hydrogen production catalytic performance and good steady It is qualitative.
Description of the drawings
Fig. 1 is the Co/Ni-MoO prepared by the method for the present invention2Combined electrolysis water catalyst for preparing hydrogen U.S. FEI The low power scanning electron microscope shot after the observation of QUANTA FEG250 scanning electron microscope(SEM)Photo;
Fig. 2 is the Co/Ni-MoO prepared by the method for the present invention2Combined electrolysis water catalyst for preparing hydrogen U.S. FEI QUANTA The high power scanning electron microscope shot after the observation of FEG250 scanning electron microscope(SEM)Photo;
Fig. 3 is the Co/Ni-MoO prepared by the method for the present invention2The X-ray diffraction of combined electrolysis water catalyst for preparing hydrogen(XRD)Figure;
Fig. 4 is the Co/Ni-MoO prepared by the method for the present invention2The x-ray photoelectron spectroscopy figure of combined electrolysis water catalyst for preparing hydrogen;
Fig. 5 is the Co/Ni-MoO prepared by the method for the present invention2Combined electrolysis water catalyst for preparing hydrogen occasion China 660D electrochemical operations Liberation of hydrogen current density-the potential energy diagram stood obtained by test.
Specific implementation mode
Present disclosure is described in further detail below by specific implementation example with reference, but these embodiments It is not intended to limit protection scope of the present invention.
Embodiment 1
Cobalt nitrate, nickel nitrate, ammonium molybdate and each 2.0 mMs of F127 are weighed respectively first in mortar, at room temperature mixed grinding 20 minutes obtained dough presomas.Above-mentioned presoma is transferred in Muffle furnace, in air atmosphere, first under 70 degrees Celsius Then heating 5 hours raises the temperature to 300 degrees Centigrade and is naturally cooling to room temperature after 1 hour to get to Co/Ni-MoO2 Combined electrolysis water catalyst for preparing hydrogen.
Embodiment 2
Cobalt nitrate, nickel nitrate, ammonium molybdate and each 2.0 mMs of F127 are weighed respectively first in mortar, at room temperature mixed grinding 20 minutes obtained dough presomas.Above-mentioned presoma is transferred in Muffle furnace, in air atmosphere, first at 80 degrees celsius Then heating 8 hours raises the temperature to 300 degrees Centigrade and is naturally cooling to room temperature after 1 hour to get to Co/Ni-MoO2 Combined electrolysis water catalyst for preparing hydrogen.
Embodiment 3
Cobalt nitrate, nickel nitrate, ammonium molybdate and each 3.0 mMs of F127 are weighed respectively first in mortar, at room temperature mixed grinding 20 minutes obtained dough presomas.Above-mentioned presoma is transferred in Muffle furnace, in air atmosphere, first under 70 degrees Celsius Then heating 8 hours raises the temperature to 300 degrees Centigrade and is naturally cooling to room temperature after 1 hour to get to Co/Ni-MoO2 Combined electrolysis water catalyst for preparing hydrogen.
Embodiment 4
By Co/Ni-MoO2Combined electrolysis water catalyst for preparing hydrogen loads in commercial foam nickel sheet, uses occasion China 660D electrochemistry works It stands and its electrolysis water catalytic activity and stability is tested.It is to electrode with platinum filament, silver/silver chlorate is reference electrode, bubble Foam nickel load Co/Ni-MoO2For working electrode, 1.0 moles of every liter of KOH aqueous solutions are electrolyte solution.In -0.5 to 0.1 V In voltage range, linear voltammetric scan is carried out with 5 milliamperes of speed of sweeping per second, you can obtain Co/Ni-MoO2Composite catalyst is catalyzed It is electrolysed the polarization curve of aquatic products hydrogen.

Claims (3)

1. a kind of Co/Ni-MoO2The preparation method of combined electrolysis water catalyst for preparing hydrogen, it is characterised in that the step of preparation method such as Under:
1)Doughy forerunner is made by reactant of cobalt nitrate, nickel nitrate, ammonium molybdate and F127 by the method for mixed grinding Body mixture;
2)Step 1 gained dough is placed in Muffle furnace, is first heated 5 hours under 70 degrees Celsius, then by temperature It is increased to 300 degrees Centigrade and is naturally cooling to room temperature after 1 hour to obtain Co/Ni-MoO2Combined electrolysis water catalyst for preparing hydrogen.
2. Co/Ni-MoO according to claim 12The preparation method of combined electrolysis water catalyst for preparing hydrogen, which is characterized in that The precursor mixture includes tetra- kinds of cobalt nitrate, nickel nitrate, ammonium molybdate and F127 substances.
3. Co/Ni-MoO according to claim 12The preparation method of combined electrolysis water catalyst for preparing hydrogen, which is characterized in that Cobalt nitrate in the precursor mixture, nickel nitrate, tetra- kinds of substances of ammonium molybdate and F127 molar ratio be 1:1:1:1.
CN201810099774.2A 2018-02-01 2018-02-01 Co/Ni-MoO2Preparation method of composite water electrolysis catalyst Expired - Fee Related CN108479791B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109939691A (en) * 2019-03-27 2019-06-28 广西大学 The carbon-clad metal particulate electrolyte water catalyst of metal oxide nano-sheet support
CN112563522A (en) * 2020-12-11 2021-03-26 西北大学 Preparation method and application of cobalt-doped molybdenum dioxide electrocatalyst
CN114774969A (en) * 2022-03-22 2022-07-22 杭州师范大学 MoO2/Ni-NC nano composite electrocatalyst and preparation method and application thereof
CN114774970A (en) * 2022-03-22 2022-07-22 杭州师范大学 MoO2/Co-NC nano composite electrocatalyst and preparation method and application thereof

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CN106807378A (en) * 2015-11-27 2017-06-09 中国科学院大连化学物理研究所 A kind of hexagon nickel cobalt oxide oxygen-separating catalyst and its preparation method and application
CN107299362A (en) * 2017-05-11 2017-10-27 中国科学院合肥物质科学研究院 A kind of preparation method and its electrochemical applications of activated carbon supported cobalt-nickel alloy material

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CN106492820A (en) * 2015-04-08 2017-03-15 天津大学 Three-dimensional macroporous structure molybdenum dioxide loads the synthetic method of cobalt oxide particle material
CN106807378A (en) * 2015-11-27 2017-06-09 中国科学院大连化学物理研究所 A kind of hexagon nickel cobalt oxide oxygen-separating catalyst and its preparation method and application
CN107299362A (en) * 2017-05-11 2017-10-27 中国科学院合肥物质科学研究院 A kind of preparation method and its electrochemical applications of activated carbon supported cobalt-nickel alloy material

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109939691A (en) * 2019-03-27 2019-06-28 广西大学 The carbon-clad metal particulate electrolyte water catalyst of metal oxide nano-sheet support
CN109939691B (en) * 2019-03-27 2021-11-26 广西大学 Carbon-coated metal particle electrolytic water catalyst supported by metal oxide nanosheets
CN112563522A (en) * 2020-12-11 2021-03-26 西北大学 Preparation method and application of cobalt-doped molybdenum dioxide electrocatalyst
CN114774969A (en) * 2022-03-22 2022-07-22 杭州师范大学 MoO2/Ni-NC nano composite electrocatalyst and preparation method and application thereof
CN114774970A (en) * 2022-03-22 2022-07-22 杭州师范大学 MoO2/Co-NC nano composite electrocatalyst and preparation method and application thereof

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