Non-noble metal-based two-dimensional MoS2/graphene water reduction catalyst as well as preparation method and application thereof

A non-precious metal, graphene technology, used in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as weak electrical conductivity, achieve large specific surface area, excellent catalytic properties, good thermal and thermal stability. The effect of chemical stability

Inactive Publication Date: 2017-07-07
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The first purpose of the present invention is to target the existing MoS 2 Due to the weak conductivity of the catalyst, a new type of non-noble metal-based MoS is proposed 2 / graphene catalyst

Method used

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  • Non-noble metal-based two-dimensional MoS2/graphene water reduction catalyst as well as preparation method and application thereof
  • Non-noble metal-based two-dimensional MoS2/graphene water reduction catalyst as well as preparation method and application thereof
  • Non-noble metal-based two-dimensional MoS2/graphene water reduction catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0025] The preparation contains 10mg graphene oxide, 750mg Na 2 MoO 4 and 1500 mg of thiourea in 50 ml of aqueous solution, ultrasonically dissolved, then added to a 100 ml polytetrafluoroethylene hydrothermal reaction kettle, and reacted at a temperature of 200° C. for 24 hours. After the reactor was cooled to room temperature, the solid sample was obtained by centrifugation, washed three times with ethanol, and then dried in an oven at 60°C for 2 hours to obtain a light yellow MoS with a mass ratio of 50:1. 2 / graphene powder samples.

[0026] Examples 1-2 to 1-8 are shown in Table 1. On the basis of changing the quality of the raw materials in Example 1-1, other experimental conditions remain unchanged, and different mass ratios of ¥MoS are prepared. 2 / graphene catalyst. MoS 2 / The chemical composition of the graphene catalyst was characterized and confirmed by X-ray diffraction (X-Ray Diffraction, XRD), as attached figure 1 shown. The morphology of the catalysts ...

Embodiment 1-9

[0030] Change the hydrothermal reaction temperature in Example 1 to 150°C, and other experimental conditions are the same as in Example 1, and prepare black MoS with a mass ratio of 50:1 2 / graphene powder samples.

Embodiment 1-10

[0032] Change the hydrothermal reaction temperature in Example 1 to 250°C, and other experimental conditions are the same as in Example 1, and prepare black MoS with a mass ratio of 50:1 2 / graphene powder sample.

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Abstract

The invention discloses a non-noble metal-based two-dimensional MoS2/graphene water reduction catalyst as well as a preparation method and application thereof. The prepared two-dimensional MoS2/graphene can be effectively applied to preparing hydrogen through photocatalytically reducing water. The two-dimensional MoS2/graphene water reduction catalyst provided by the invention has the following chemical general formula: (MoS2)x(graphene)y, wherein x to y is the mass ratio between MoS2 and graphene, and x to y is equal to (50-0.25) to 1. The catalyst provided by the invention is made by means of a hydrothermal method, and may perform the cooperative reinforcement on the performance of catalyzing water for preparing hydrogen via reduction by using excellent proton reducing capacity of the MoS2 and good charge transfer capability of the graphene.

Description

technical field [0001] The invention belongs to the field of clean energy conversion materials, in particular to a two-dimensional MoS 2 / Graphene water reduction catalyst and its preparation method and application. Background technique [0002] Energy crisis and environmental pollution are two major problems facing the world today. The development of environmentally friendly, low-cost, abundant and renewable green energy has become a huge challenge for the development of human society. Solar energy has the advantages of rich resources, relatively uniform distribution, no need for transportation, and environmental friendliness. It is the most ideal energy source for the future society. Photocatalytic hydrogen production technology uses abundant solar energy and water resources in nature to convert solar energy into hydrogen energy, which is one of the most ideal ways to utilize solar energy. [0003] In the field of solar hydrogen production, noble metal-supported semicon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051C01B3/08
CPCY02E60/36B01J27/051B01J35/0033B01J35/004C01B3/08
Inventor 元勇军陈大钦方高亮叶智俊
Owner HANGZHOU DIANZI UNIV
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