Ternary layered carbide Mo2Ga2C composite flower-like MoS2 nano-particle composite material and preparation method and application thereof

A ternary layered and nano-particle technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., to achieve the effects of simple operation, improved synergistic effect, and high purity

Inactive Publication Date: 2020-06-05
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There is no MoS in the prior art 2 Nanoparticles and Ternary Layered Carbide Mo 2 Ga 2 Research and Application of C Composite Structure

Method used

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  • Ternary layered carbide Mo2Ga2C composite flower-like MoS2 nano-particle composite material and preparation method and application thereof
  • Ternary layered carbide Mo2Ga2C composite flower-like MoS2 nano-particle composite material and preparation method and application thereof
  • Ternary layered carbide Mo2Ga2C composite flower-like MoS2 nano-particle composite material and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0039] Preparation of ternary layered carbide Mo 2 Ga 2 C composite flower-like MoS 2 Nanoparticle composites, specifically including:

[0040] (1) Weigh molybdenum powder and graphite according to the molar ratio of 2:1 (molybdenum powder 5.76g, graphite 0.36g), and ball mill for about 12 hours to make them fully mixed. The mixed powder was placed in a tube furnace, heated to 1000 °C at a rate of 8 °C per minute under an argon atmosphere, and kept at 1000 °C for 12 hours to obtain sintered bulk Mo 2 C;

[0041] (2) Take the above bulk Mo 2 4.08g of material C was ground into powder, mixed fully with 11.2g of liquid metal gallium at a molar ratio of 1:8, and then placed in a tube furnace. The tube furnace was evacuated and sealed, and the temperature was raised to 850 ℃ and kept for 48 hours, after natural cooling to obtain a light sintered material; take out the light sintered material, crush it with a mortar, put it back into the tube furnace, keep it at 850 ℃ for 24 ho...

Embodiment 2

[0049] The ternary layered carbide Mo of the present invention 2 Ga 2 C composite flower-like MoS 2 Performance testing of nanoparticle composites as cathode materials for electrolysis of hydrogen

[0050] The ternary layered carbide Mo prepared in above-mentioned embodiment 1 2 Ga 2 C composite flower-like MoS 2 Nanoparticle composite material, the base material ternary layered carbide Mo 2 Ga 2 C has a large specific surface area and good conductivity, and its composite material MoS 2 Nanoparticles have low overpotential and good catalytic activity. In the present invention, the ternary layered carbide Mo 2 Ga 2 C material is applied in the electrolysis hydrogen cathode material, through the composite nano-flower MoS 2 Nanoparticles act synergistically to enhance catalytic performance. The ternary layered carbide Mo of the present invention 2 Ga 2 C composite flower-like MoS 2 The performance test of the nanoparticle composite material as a cathode material for...

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Abstract

The invention discloses a ternary layered carbide Mo2Ga2C composite flower-like MoS2 nano-particle composite material and a preparation method and application thereof. According to the composite material, flower-like MoS2 nanoparticles are used as compounds, ternary layered carbide Mo2Ga2C is used as a carrying substrate material, the ternary layered carbide Mo2Ga2C has a length of about 5 [mu]m and a width of about 3 [mu]m, and is a hexagonal crystal phase layered skeleton material, two Ga layers are stacked between Mo2C layers in a simple hexagonal arrangement, the closely packed Mo atoms are interleaved with the double layers of Ga to form a Mo-Mo-Ga-Ga-Mo-Mo layer, the two Ga layers lie exactly on tops without being closely packed, the carbon atoms occupy octahedral position points among the Mo atoms, and the flower-like MoS2 nanoparticles are uniformly distributed on the surface of the layered Mo2Ga2C to form a stable carrying structure. The invention further discloses a preparation method of the composite material. The preparation method is low in cost, simple in preparation condition and high in repeatability. The invention also provides an application of the nano material as a water splitting catalytic electrode, and the electrode material has the advantages of high conductivity, strong cycling stability and the like.

Description

technical field [0001] The invention relates to the technical field of semiconductor materials, ternary layered carbides and electrocatalytic hydrogen evolution, in particular to ternary layered carbides Mo 2 Ga 2 C composite flower-like MoS 2 Nanoparticles (Mo 2 Ga 2 C@MoS 2 ) composite material, preparation method and application of the composite material in electrocatalytic hydrogen evolution cathode material. Background technique [0002] Energy is an important basis for the survival of today's society and a driving force for economic and social development. As the consumption of fossil energy continues to increase, the problem of environmental pollution is becoming more and more serious, so it is imminent to seek clean and sustainable energy. Hydrogen is a clean energy that can be produced by electrolysis of water. It has the advantages of low cost, environmental friendliness and high efficiency, and is favored by people. [0003] MoS 2 It is a typical layered ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22C25B11/06C25B1/04
CPCB01J27/22B01J35/0033C25B1/04C25B11/091Y02E60/36
Inventor 任杰宗晖郁可朱自强
Owner EAST CHINA NORMAL UNIV
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