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MoS2/In2S3 composite catalyst serving as photoelectrocatalytic dehydrogenation material and preparation method of MoS2/In2S3 composite catalyst

A composite catalyst, photoelectric catalysis technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of rare and widespread application, high price, reduced photoelectric hydrogen evolution performance, etc., and achieve wide application prospects , the process is simple, the effect of excellent photoelectric catalytic performance

Active Publication Date: 2017-05-31
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Noble metals such as Pt have been widely proven to be excellent hydrogen evolution catalysts with low overpotential near zero volts (relative to the reversible hydrogen electrode) and small Tafel slope, high catalytic activity and stability, but expensive and scarce limit It is widely used, so it is imminent to develop noble metal-free hydrogen evolution catalysts
[0004] MoS 2 It is a very excellent hydrogen evolution cathode catalyst with low price and excellent chemical stability and hydrogen evolution activity. However, a single MoS 2 There are fewer hydrogen evolution active sites at the edge, and the photogenerated electrons and holes are easy to recombine, which seriously reduces the MoS 2 photoelectric hydrogen evolution performance

Method used

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  • MoS2/In2S3 composite catalyst serving as photoelectrocatalytic dehydrogenation material and preparation method of MoS2/In2S3 composite catalyst
  • MoS2/In2S3 composite catalyst serving as photoelectrocatalytic dehydrogenation material and preparation method of MoS2/In2S3 composite catalyst
  • MoS2/In2S3 composite catalyst serving as photoelectrocatalytic dehydrogenation material and preparation method of MoS2/In2S3 composite catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Weigh 0.015g of sodium molybdate dihydrate and 0.0266g of indium chloride (molar ratio 1:2) and dissolve them in 20ml of deionized water;

[0036] (2) Weigh 0.03g of thioacetamide into the solution of step (1), stir well and then sonicate for 30min;

[0037] (3) Transfer the solution prepared in step (2) to the polytetrafluoroethylene lining of a 25ml hydrothermal kettle, place the pretreated ITO glass in the inner tank with the conductive side facing down, and put the hydrothermal kettle and inner tank After the lining is sealed, the temperature of the hydrothermal kettle is controlled at 220ºC, and the hydrothermal time is controlled at 20h to obtain MoS with good adhesion 2 / In 2 S 3 Composite catalyst;

[0038] (4) Take out the ITO glass and soak it in absolute ethanol and deionized water for 15 minutes, then dry it to obtain MoS 2 / In 2 S 3 Composite catalyst.

[0039] Simple MoS 2 Preparation: Weigh 0.015g of sodium molybdate dihydrate and 0.03g of thi...

Embodiment 2

[0042] (1) Weigh 0.015g of sodium molybdate dihydrate and 0.0665g of indium chloride (molar ratio 1:5) and dissolve them in 20ml of deionized water;

[0043] (2) Weigh 0.03g of thioacetamide and add it to the solution of step 1), stir it evenly and then sonicate for 30min;

[0044] (3) Transfer the solution prepared in step 2) to the polytetrafluoroethylene lining of the hydrothermal kettle, place the pretreated ITO glass in the liner with the conductive side facing down, and seal the hydrothermal kettle and the inner lining Finally, the temperature of the hydrothermal kettle was controlled at 220ºC, and the hydrothermal time was controlled at 20h to obtain MoS with good adhesion. 2 / In 2 S 3 Composite catalyst;

[0045] (4) Take out the ITO glass and soak it in absolute ethanol and deionized water for 15 minutes, then dry it to obtain MoS 2 / In 2 S 3 Composite catalyst.

[0046] MoS 2 / In 2 S 3 Scanning electron micrographs of composite catalysts ( Figure 5 ) show...

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Abstract

The invention relates to a MoS2 / In2S3 composite catalyst serving as a photoelectrocatalytic dehydrogenation material and a preparation method of MoS2 / In2S3 composite catalyst. The preparation method includes: configuring a mo source, an indium source and a sulfur source into a solution which is mixed and stirred; subjecting the solution to uniform ultrasonic dispersion, and preparing the MoS2 / In2S3 composite catalyst on an ITO glass substrate by the aid of a one-step hydrothermal method. The MoS2 / In2S3 composite catalyst not added with any surfactants is environment friendly, the preparation method is easy to operate, and the MoS2 / In2S3 composite catalyst is the excellent photoelectrocatalytic dehydrogenation material.

Description

technical field [0001] The invention belongs to the field of energy materials, in particular to a MoS used as a photoelectric catalytic hydrogen evolution material 2 / In 2 S 3 Composite catalyst and its preparation method. Background technique [0002] The combustion of fossil fuels releases a large amount of toxic gases, causing serious environmental pollution and endangering people's health. Therefore, it is an urgent task for us to develop and utilize new clean energy. Compared with new renewable clean energy such as wind energy and nuclear energy, hydrogen has the advantages of simple preparation conditions, relatively low equipment price, green environmental protection, etc. Hydrogen, an environmentally friendly and renewable energy source, has broad application prospects. Traditional hydrogen production methods include petroleum cracking method and water gas method, etc. These methods need to consume fossil raw materials and produce hydrogen with low purity. Howev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051C25B1/04C25B11/06
CPCC25B1/04C25B11/04B01J27/051C25B1/55B01J35/33B01J35/39Y02E60/36
Inventor 吉静孙保亮王峰
Owner BEIJING UNIV OF CHEM TECH
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