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MoS2@Cu2S@ copper foam composite nanometer material and preparation method and application thereof

A technology of composite nanomaterials and copper foam, which is applied in nanotechnology, metal material coating technology, liquid chemical plating, etc., can solve the problems of complex preparation process, etc., and achieve the effect of simple operation, large industrial application prospect, and easy to achieve

Active Publication Date: 2018-12-07
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the preparation process of this kind of composite array material, magnetron sputtering technology is used, and the preparation process of the material is relatively complicated.

Method used

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  • MoS2@Cu2S@ copper foam composite nanometer material and preparation method and application thereof
  • MoS2@Cu2S@ copper foam composite nanometer material and preparation method and application thereof
  • MoS2@Cu2S@ copper foam composite nanometer material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Cu(OH) 2 Preparation of @foam copper composite nanomaterials:

[0027] First, use absolute ethanol to ultrasonically clean the oil stains on the surface of commercial copper foam, the size of which is 1 × 2 cm 2 , sonicate for 15 minutes, and then use 1 mol / L hydrochloric acid to ultrasonically clean the oxides on the surface of the foamed copper for 30 minutes, and finally use deionized water to ultrasonically clean for 10 minutes, and the treated foamed copper is ready for use.

[0028] Measure 7.5 mL of deionized water into No. 1 and No. 2 centrifuge tubes, add 2.525 g potassium hydroxide to No. 1 centrifuge tube to make a 6 mol / L solution, and add 0.4108 g persulfate to No. 2 centrifuge tube Ammonium, configured as a 0.24 mol / L solution, was sonicated for 15 min until the solid was completely dissolved. Inject the solution in the No. 2 centrifuge tube into the No. 1 centrifuge tube, and then sonicate for 5 minutes. Finally, add the treated foam copper and react at...

Embodiment 2

[0034] MoS 2 @Cu 2 Preparation of S@foam copper composite nanomaterials:

[0035] Measure 30 mg of deionized water into a conical flask, add 45 mg of sodium molybdate dihydrate and 90 mg of thiourea in sequence, and ultrasonicate for 15 min until the solid is completely dissolved. The mixed solution is transferred to a 50 mL autoclave, and finally the Cu(OH) prepared in Example 1 is added. 2@Foam copper composite material, heat up to 180°C, react for 6 h, after the reaction is completed, wash and dry to obtain the target product.

[0036] image 3 MoS prepared for Example 2 2 @Cu 2 The SEM image of the S@foam copper composite nanomaterial, as can be seen from the figure: the prepared MoS 2 @Cu 2 The surface of S nanorods is rough, a small part of the nanorods are agglomerated into spheres, and the average diameter of most of the nanorods is about 500 nm.

Embodiment 3

[0038] MoS 2 @Cu 2 Preparation of S@foam copper composite nanomaterials:

[0039] Measure 30 mg of deionized water into a conical flask, add 45 mg of sodium molybdate dihydrate and 90 mg of thiourea in sequence, and ultrasonicate for 15 min until the solid is completely dissolved. The mixed solution is transferred to a 50 mL autoclave, and finally the Cu(OH) prepared in Example 1 is added. 2 @Foam copper composite material, heat up to 200°C, react for 6 h, after the reaction is completed, wash and dry to obtain the target product.

[0040] Figure 4 MoS prepared for Example 3 2 @Cu 2 The SEM image of the S@foam copper composite nanomaterial, as can be seen from the figure: the prepared MoS 2 @Cu 2 The S nanorods have a rough surface and uniform size, and the average diameter of the nanorods is about 600 nm.

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Abstract

The invention discloses a MoS2@Cu2S@ copper foam composite nanometer material and a preparation method and application of the MoS2@Cu2S@ copper foam composite nanometer material. The preparation method of the MoS2@Cu2S@ copper foam composite nanometer material comprises the following steps that (1) Cu(OH)2 nano-array rods are prepared on copper foam through a solution etching method; (2) the Cu(OH)2 nano-array rods obtained in the first step are used as a template and dipped into a crystalline hydrous molybdate and thiourea mixed solution, MoS2@Cu2S nano-array rods are generated through conversion by means of a hydrothermal synthesis method, and the composite nanometer material is obtained. The MoS2@Cu2S@ copper foam composite nanometer material is prepared by the adoption of the preparation method. A water electrolysis hydrogen evolution catalyst comprises the MoS2@Cu2S@ copper foam composite nanometer material. The MoS2 having good hydrogen evolution activity are grown on the surfaces of the Cu2S nano-array rods in an in-situ manner by means of a hydrothermal process, so that the electro-catalytic property of the composite is improved through the good electron conduction capacityof sulfide, and therefore by the adoption of in-situ growth of the MoS2@Cu2S on the surface of the foam copper, the electro-catalytic property of the composite can be collaboratively improved.

Description

technical field [0001] The invention relates to the technical field of electrolysis of water and catalytic hydrogen evolution, in particular to a kind of MoS 2 @Cu 2 S@foam copper composite nanomaterial and its preparation method and application. Background technique [0002] As we all know, among many hydrogen production methods, hydrogen production by electrolysis of water is currently the most mature technology, easy to industrialize, and green and environmentally friendly. The key to hydrogen production by electrolysis of water is to find a suitable catalyst to catalyze the splitting of water. The noble metals Pt, Pd and their alloys are good hydrogen evolution electrode materials because of their low hydrogen evolution overpotential and excellent electrochemical catalytic activity. However, precious metals such as Pt and Pd cannot be widely used in industry due to their limited reserves and high prices. Therefore, the development of low-cost, high-performance electr...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B11/06C25B11/03C23C18/12B82Y40/00
CPCB82Y40/00C23C18/1204C25B1/04C25B11/031C25B11/091Y02E60/36
Inventor 喻发全汪贤明王建芝薛亚楠蔡宁谌伟明
Owner WUHAN INSTITUTE OF TECHNOLOGY
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