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Hydrogen evolution reaction catalyst with layered mesoporous structure and preparation method of hydrogen evolution reaction catalyst

A technology of mesoporous structure and hydrogen evolution reaction, applied in the field of nanomaterials, can solve the problems of easy sample and reduced HER catalytic performance, and achieve the effects of low production cost, abundant electrochemical active sites, and broad industrial application prospects.

Inactive Publication Date: 2019-02-19
ANHUI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the preparation process of molybdenum-based catalysts, annealing is usually an essential part, but the sample is easy to aggregate during the annealing and carbonization process, and the increase in volume leads to a decrease in the HER catalytic performance of the product

Method used

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  • Hydrogen evolution reaction catalyst with layered mesoporous structure and preparation method of hydrogen evolution reaction catalyst
  • Hydrogen evolution reaction catalyst with layered mesoporous structure and preparation method of hydrogen evolution reaction catalyst
  • Hydrogen evolution reaction catalyst with layered mesoporous structure and preparation method of hydrogen evolution reaction catalyst

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Experimental program
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Effect test

Embodiment 1

[0026] Add 5.04g of oxalic acid, 2.52g of melamine, 0.6g of ammonium heptamolybdate tetrahydrate and 80ml of deionized water into a 150ml beaker, stir at 65°C for 6 hours in a water bath, then cool naturally to room temperature and add 20ml of deionized water to continue Stir for 12 hours, centrifuge to take the precipitate, wash the obtained precipitate repeatedly with absolute ethanol and deionized water, place it in a tube furnace, heat it up to 900°C at a rate of 2°C / min in a nitrogen atmosphere and keep it warm for 2 hours to obtain Carbon Nanomaterials A.

[0027] The obtained carbon nanomaterial A is observed with a scanning electron microscope and a transmission electron microscope, and the results are as follows figure 1 shown by figure 1 It can be seen that the microstructure of carbon nanomaterial A presents hierarchical mesopores.

Embodiment 2

[0038] Conduct electrocatalytic performance tests on carbon nanomaterials A-D and platinum carbon electrodes (pt / c), the test results are as follows Figure 5 As shown, carbon nanomaterial A has the best catalytic performance compared to platinum carbon electrode (pt / c) and carbon nanomaterials B, C and D.

[0039] After the carbon nanomaterial A was subjected to 2000 CV cycles, the electrocatalytic performance test was carried out, and the results were as follows: Figure 6 shown, from Figure 6 It can be seen that the sample still has high durability after 2000 CV cycles.

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Abstract

The invention discloses a preparation method of a hydrogen evolution reaction catalyst with a layered mesoporous structure. The preparation method comprises the following steps: stirring oxalic acid,melamine, ammonium paramolybdate and water at the temperature of 65 DEG C, cooling to the room temperature and then adding water and keeping stirring, centrifuging, washing, heating to the temperatureof 900 DEG C in the atmosphere of nitrogen and insulating for 2 hours to obtain the hydrogen evolution reaction catalyst with the layered mesoporous structure. The invention further discloses the hydrogen evolution reaction catalyst with the layered mesoporous structure prepared by the preparation method. The hydrogen evolution reaction catalyst with the layered mesoporous structure has the advantages that the operation process of the preparation method is simple and convenient, preparation conditions are simple but are not rigorous, the production cost is low, and quantity production is facilitated; and durability is high, and the hydrogen evolution reaction catalyst with the layered mesoporous structure is suitable for long-time hydrogen evolution reaction catalysis, and has wide industrialized application prospect.

Description

technical field [0001] The invention belongs to the field of material nanotechnology, and more specifically relates to a hydrogen evolution reaction catalyst with a layered mesoporous structure and a preparation method thereof. Background technique [0002] With the depletion of petroleum energy and the greenhouse effect caused by problems caused by thermal power generation, green energy has been proposed by many countries as an important part of sustainable development. Hydrogen is regarded as the most potential candidate of the existing polluting energy because the product of its combustion is water. Water splitting is the most common and widespread method for hydrogen production. Precious metals such as platinum are used as catalysts for water splitting reactions, because of their high-efficiency performance, they are commonly used in large-scale industrial hydrogen production. However, the elements of the noble metal group are relatively rare on the earth, and they are ...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/00B01J35/10B01J37/08
CPCB01J27/24B01J37/082B01J35/33B01J35/64
Inventor 李洋黄麒麟蔡伦都一鸣刘世球
Owner ANHUI UNIV OF SCI & TECH
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