Preparation method of molybdenum selenide-acetylene black composite material and application of molybdenum selenide-acetylene black composite material as catalyst in hydrogen evolution reaction

A composite material, a technology for hydrogen evolution reaction, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as hindering the wide application of hydrogen evolution reaction, large ion migration resistance, unreasonable pore size distribution, etc. Achieve the effect of improving electrochemical performance, simple preparation method and low cost

Inactive Publication Date: 2016-04-20
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, acetylene black itself has different flake sizes, unreasonable pore size distribution, and high ion migration resistance in micropores, which hinders its wide application in hydrogen evolution reaction.

Method used

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  • Preparation method of molybdenum selenide-acetylene black composite material and application of molybdenum selenide-acetylene black composite material as catalyst in hydrogen evolution reaction
  • Preparation method of molybdenum selenide-acetylene black composite material and application of molybdenum selenide-acetylene black composite material as catalyst in hydrogen evolution reaction
  • Preparation method of molybdenum selenide-acetylene black composite material and application of molybdenum selenide-acetylene black composite material as catalyst in hydrogen evolution reaction

Examples

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Effect test

Embodiment 1

[0036] The preparation method of molybdenum selenide-acetylene black composite material of the present invention, detailed steps are as follows:

[0037] a, first weigh 0.15g selenium powder and 0.25g sodium molybdate Na 2 MoO 4 2H 2 0, the selenium powder and sodium molybdate taken by weighing are dissolved in 30mL secondary distilled water and are constantly stirred, when two kinds of materials dissolve fully, form a homogeneous solution, be recorded as solution ①;

[0038] b. At room temperature, add 5 mL of hydrazine hydrate dropwise to the solution ① obtained in step a and stir, and the solution obtained after stirring evenly is recorded as solution ②;

[0039] c. Acidification of acetylene black: Add 0.1g of acetylene black (commercially available acetylene black) into the mixed acid of concentrated sulfuric acid and concentrated nitric acid (when mixing, the volume ratio of concentrated sulfuric acid and concentrated nitric acid is 1:1), and heat to 85°C Under reflux...

Embodiment 2

[0047] The preparation method of molybdenum selenide-acetylene black composite material of the present invention, detailed steps are as follows:

[0048] a, first weigh 0.12g selenium powder and 0.20g sodium molybdate Na 2 MoO 4 2H 2 0, the selenium powder and sodium molybdate taken by weighing are dissolved in 25mL double-distilled water and are constantly stirred, when two kinds of materials are completely dissolved, a homogeneous solution is formed, which is recorded as solution ①;

[0049] b. At room temperature, add 4 mL of hydrazine hydrate dropwise to the solution ① obtained in step a and stir, and the solution obtained after stirring is recorded as solution ②;

[0050] c. Acidification of acetylene black: add 0.05g of acetylene black (commercially available acetylene black) into the mixed acid of concentrated sulfuric acid and concentrated nitric acid (when mixing, the volume ratio of concentrated sulfuric acid and concentrated nitric acid is 1:1), and heat to 80°C ...

Embodiment 3

[0058] The preparation method of molybdenum selenide-acetylene black composite material of the present invention, detailed steps are as follows:

[0059] a, first weigh 0.18g selenium powder and 0.30g sodium molybdate Na 2 MoO 4 2H 2 0, the selenium powder and sodium molybdate taken by weighing are dissolved in 40mL double-distilled water and are constantly stirred, when two kinds of materials are completely dissolved, a homogeneous solution is formed, which is recorded as solution ①;

[0060] b. At room temperature, add 6mL of hydrazine hydrate dropwise to the solution ① obtained in step a and stir, and the solution obtained after stirring evenly is recorded as solution ②;

[0061] c. Acidification of acetylene black: Add 0.15g of acetylene black (commercially available acetylene black) into the mixed acid of concentrated sulfuric acid and concentrated nitric acid (when mixing, the volume ratio of concentrated sulfuric acid and concentrated nitric acid is 1:1), and heat to ...

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Abstract

The invention discloses a preparation method of a molybdenum selenide-acetylene black composite material and an application of the molybdenum selenide-acetylene black composite material as a catalyst in a hydrogen evolution reaction. The preparation method comprises the steps that firstly, selenium powder and sodium molybdate are dissolved in distilled water and stirred and dissolved sufficiently, and a solution (1) is formed; hydrazine hydrate is added dropwise to the solution (1) and stirred and mixed uniformly, and a solution (2) is obtained; acetylene black is subjected to acidizing treatment and then ultrasonically dispersed in distilled water, and a homogenous solution (3) is obtained; the solution (3) is added dropwise to the solution (2) and mixed uniformly, and a mixed solution (4) is obtained; pH of the mixed solution (4) is regulated to 12.0-12.5, and a solution (5) is obtained; treated nickel foam sheets are soaked in the solution (5) and then transferred to a reaction kettle for the reaction; the temperature is reduced to room temperature after the reaction, a product is subjected to centrifugation, washing, drying and stripping, and the molybdenum selenide-acetylene black composite material is obtained. When the prepared molybdenum selenide-acetylene black composite material is taken as the catalyst in the hydrogen evolution reaction, the hydrogen evolution overpotential is low, and the Tafel slope is small.

Description

1. Technical field: [0001] The present invention relates to a preparation method of a novel nanometer material and its use in hydrogen evolution reaction, belonging to the field of new energy technology, in particular to a preparation method of molybdenum selenide-acetylene black composite material and its use as a catalyst in hydrogen evolution reaction application. 2. Background technology: [0002] At present, the ever-increasing economic growth rate promotes the continuous increase of energy demand and causes serious global environmental pollution. Seeking a sustainable energy source and developing economical and environmentally friendly energy technology are effective ways to solve the problem. Hydrogen is a clean, environmentally friendly, low-emission renewable energy, and is considered to be the carrier of future energy. In recent years, electrochemical hydrogen production from water splitting has attracted much attention as an environmentally friendly hydrogen prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J35/10C25B1/04C25B11/06
CPCB01J27/0573B01J35/1004C25B1/04C25B11/04Y02E60/36
Inventor 黄克靖张继宗郝盼
Owner XINYANG NORMAL UNIVERSITY
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