Metal sulfide electrode with hydrogen reduction activity and preparation method of metal sulfide electrode

A metal sulfide and electrode technology, which is applied to electrodes, electrolysis process, electrolysis components, etc., can solve the problems of expensive equipment and complicated preparation process, and achieve the effects of low cost, good repeatability and simple synthesis method.

Inactive Publication Date: 2015-01-28
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of the above-mentioned metal sulfide hydrogen reductio...

Method used

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  • Metal sulfide electrode with hydrogen reduction activity and preparation method of metal sulfide electrode
  • Metal sulfide electrode with hydrogen reduction activity and preparation method of metal sulfide electrode
  • Metal sulfide electrode with hydrogen reduction activity and preparation method of metal sulfide electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) Put a titanium sheet with a purity of 99.7%, a length of 2.50 cm, a width of 1.00 cm, and a thickness of 0.05 cm into acetone for ultrasonic cleaning for 20 minutes, then transfer it to isopropanol and deionized water in turn, and ultrasonically wash them respectively 20min.

[0033] (2) Put the cleaned and dried titanium sheet into 0.5% HF solution at room temperature, clamp the upper end of the Ti sheet with a clamp, and immerse the lower end in the HF solution, and use the platinum sheet as the counter electrode for anodic oxidation. Among them, the oxidation voltage is 20V, and the oxidation time is 20min. During anodic oxidation, the surface facing the platinum sheet is defined as the front side, and the surface facing away from the platinum sheet is defined as the reverse side. After the oxidation is completed, porous amorphous titanium dioxide nanotubes are obtained on the front and back sides, which are rinsed with deionized water and then dried.

[0034] (3)...

Embodiment 2

[0037] (1) Use the method of step (1) in Example 1 to clean.

[0038] (2) adopt the method for step (2), (3) in the embodiment 1 to prepare porous anatase TiO 2 nanotube.

[0039] (3) Prepare 2×10 -3 mol / L (NH 4 ) 2 MoS 4 solution, the solvent is ethanol: water = 1:8, take 10mL of the solution and put it into a petri dish, and the porous anatase TiO obtained in step (2) 2 The nanotubes were placed in the petri dish horizontally, the Ti sheet was facing up, and the TiO was irradiated with ultraviolet light with a light intensity of 10mW. 2 The nanotube material was taken out after 4 hours, rinsed with deionized water and dried to obtain MoS 2 electrode.

Embodiment 3

[0041] (1) Adopt the same cleaning method as step (1) in Example 1 to clean the titanium sheet.

[0042] (2) adopt the method for step (2), (3) in the embodiment 1 to prepare porous anatase TiO 2 nanotube.

[0043] (3) Prepare 2×10 -3 mol / L (NH 4 ) 2 MoS 4 solution, the solvent is ethanol: water=1:8, get 10mL of this solution and put it into a petri dish, and the porous anatase TiO obtained in step (2) 2 Put the nanotubes into the Petri dish horizontally, with the Ti sheet facing up, and use a light intensity of 10mW / cm 2 TiO irradiated with UV light 2 The nanotube material was taken out after 1 hour, rinsed with deionized water and dried to obtain MoS 2 electrode.

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Abstract

The invention discloses a metal sulfide electrode with a hydrogen reduction catalytic function and a preparation method of the metal sulfide electrode, belonging to the fields of inorganic chemistry and catalysis. The electrode contains metal titanium, porous anatase TiO2 nanotubes grown on the surface of titanium and metal sulfide nanoparticles loaded on the surfaces of the nanotubes. The preparation method comprises the following steps: firstly preparing the anatase TiO2 nanotubes with a porous structure on the surface of metal titanium by an electrochemical anode oxidation method; then placing the TiO2 nanotubes into a solution containing molybdenum ions or tungsten ions, and irradiating ultraviolet light on the surface; and reducing the molybdenum ions or the tungsten ions by utilizing the photocatalytic reduction of the TiO2 nanotubes under the ultraviolet light to generate MoS2 or WS2 nanoparticles. The metal sulfide electrode prepared by the preparation method disclosed by the invention shows hydrogen reduction catalytic activity and has the characteristics of low cost, simple preparation method and environmental friendliness. In the metal sulfide electrode disclosed by the invention, a metal sulfide catalyst is directly loaded on a conductive porous substrate to form the electrode and can be directly applied to hydrogen reduction reaction, and the catalyst particles do not need to be fixed.

Description

technical field [0001] The invention belongs to the technical field of nanometer material preparation, and in particular relates to a metal sulfide electrode with hydrogen reduction catalytic activity and a preparation method. Background technique [0002] The development of clean and renewable energy is an important way to solve the future energy crisis. Hydrogen has the advantages of high combustion calorific value, clean and non-polluting combustion products, and a wide range of applications. It is one of the most promising secondary clean energy sources. Hydrogen is abundant on earth, but there is little hydrogen energy available. The reduction of hydrogen into hydrogen gas by electrolysis of water is an important means of hydrogen energy production, in which electrodes with catalytic activity for hydrogen reduction play a crucial role. At present, most efficient hydrogen reduction electrodes are noble metals or materials supported by noble metals. Although such electr...

Claims

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Application Information

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IPC IPC(8): C25B11/10C25B1/04
CPCY02E60/36
Inventor 刘兆阅孟晨辉
Owner BEIHANG UNIV
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