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A preparing method for a hydrogen production composite catalytic electrode

A catalytic electrode, metal titanium technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of poor conductivity, limited edge length, insufficient number of active sites, etc., to solve the problem of easy agglomeration and regular morphology of products. , the effect of easy control of reaction conditions

Inactive Publication Date: 2017-03-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, molybdenum disulfide is a semiconductor material with poor conductivity and a layered crystal structure, which has a strong tendency to form sheet-like nanocrystals with limited edge length and insufficient number of active sites, making molybdenum disulfide and platinum There is still a big gap compared with the base catalyst

Method used

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  • A preparing method for a hydrogen production composite catalytic electrode
  • A preparing method for a hydrogen production composite catalytic electrode
  • A preparing method for a hydrogen production composite catalytic electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The titanium mesh with a geometric area of ​​5 square centimeters was ultrasonically cleaned with deionized water, alcohol and acetone for 30 minutes in order to remove surface organic matter. 6 mmol of CoCl 2 ·6H 2 O, 4 mmol NH 4 Cl, 3 mmol of CO(NH 2 ) 2 Dissolve in 16 mL of deionized water and stir for 20 min. The clear pink solution was then transferred into a Teflon liner (20 mL), the titanium mesh was stood in the liner, and placed in a stainless steel autoclave. The autoclave was sealed and placed in an electric oven, reacted at 120 degrees Celsius for 6 hours, and then cooled to room temperature. Take out the titanium mesh, wash it, and dry it at 70 degrees Celsius for 12 hours. Co(OH) obtained by SEM 2 The topography of / Ti is as follows figure 1 shown.

[0031] Dissolve 5 mmol of ammonium molybdate and 15 mmol of thioacetamide in 30 mL of deionized water and stir to form a transparent solution. The solution was then transferred to a Teflon liner (40 ...

Embodiment 2

[0035] A titanium sheet with a geometric area of ​​8 square centimeters was ultrasonically cleaned with deionized water, alcohol and acetone for 30 minutes in order to remove surface organic matter. 5 mmol of Co(NO 3 ) 2 ·6H 2 O, 5 mmol of (NH 4 ) 2 CO 3 , 4 mmol of ammonia water was dissolved in 50 ml of deionized water and stirred for 30 min. The clear pink solution was then transferred to a polytetrafluoroethylene liner (60 ml), and the titanium piece was placed in the liner and placed in a stainless steel autoclave. The autoclave was sealed and placed in an electric oven, reacted at 60 degrees Celsius for 12 hours, and then cooled to room temperature. The titanium sheet was taken out and washed, and dried at 60 degrees Celsius for 24 hours.

[0036] Dissolve 2 mmol of sodium molybdate and 10 mmol of sodium sulfide in 40 mL of deionized water and stir to form a transparent solution. The solution was then transferred to a Teflon liner (40 mL) and a 6 cm2 piece of Co(...

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Abstract

A preparing method for a hydrogen production composite catalytic electrode is disclosed. The method includes (1) cleaning metal titanium, (2) soaking the pretreated metal titanium in a weakly basic aqueous solution of a cobalt source, adding the mixture into an autoclave, performing a hydrothermal reaction at 60-120 DEG C for 2-12 h, cooling the reaction product, taking the metal titanium after cobalt functionalization out, washing the metal titanium with deionized water, and performing vacuum drying for certain hours to obtain a Co(OH)2 / Ti template, and (3) soaking the Co(OH)2 / Ti template in an aqueous solution of a sulfur source and a molybdenum source, adding the mixture into an autoclave, performing a hydrothermal reaction at 180-250 DEG C for 12-24 h, cooling the reaction product, taking the sulfurated Co(OH)2 / Ti out, washing the sulfurated Co(OH)2 / Ti with deionized water, and performing vacuum drying. According to the hydrogen production composite catalytic electrode prepared by the method, morphology of molybdenum disulfide nanosheet flowers is regular, the area of layered exposed edges is large, catalytic activity is greatly benefited, and batch production is expected.

Description

technical field [0001] The invention relates to the field of hydrogen production catalysts, in particular to a method for preparing a hydrogen production composite catalytic electrode. Background technique [0002] With the depletion of petroleum, coal and other consuming energy sources and many environmental problems caused by burning fossil fuels, it is imminent to find a new green and recyclable energy source. In the field of new energy, solar energy, wind energy, water energy and nuclear energy, as well as the derived electric energy, are the main energy sources in the future because they are clean, pollution-free and renewable. However, the storage and continuous supply of these new energy sources is a problem that must be solved, and converting them into chemical energy is a main way, such as electrolysis of water to produce hydrogen and oxygen. Significant efforts are required to develop efficient catalysts for hydrogen production from water electrolysis. So far, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/12C25B11/06C25B1/04
CPCC23C18/1204C25B1/04C25B11/051C25B11/075Y02E60/36
Inventor 李国强侯冬曼匡思远
Owner SOUTH CHINA UNIV OF TECH
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