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Ultrathin molybdenum carbide material and production method thereof

An ultra-thin molybdenum carbide and molybdenum carbide technology, applied in carbides, tungsten/molybdenum carbides, nanotechnology and other directions, can solve the problems of surface defects, small transition metal carbide area, restricting the exploration of transition metal materials, etc. Simple preparation process

Active Publication Date: 2017-03-15
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small area of ​​transition metal carbides prepared by common chemical methods and serious defects on the surface, the exploration of transition metal materials is seriously restricted.

Method used

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  • Ultrathin molybdenum carbide material and production method thereof
  • Ultrathin molybdenum carbide material and production method thereof
  • Ultrathin molybdenum carbide material and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Put a copper foil with a thickness of 5 μm on the molybdenum powder, place it in the reaction furnace tube, and then pass a mixed gas of hydrogen and argon at a rate of 100 sccm, wherein the volume ratio of hydrogen and argon is 2:1 ;

[0026] (2) Raise the temperature to 900°C at a rate of 1°C / min, feed ethylene at a rate of 0.5sccm and react for 10min;

[0027] (3) Cool down to 25°C at a rate of 5°C / min to prepare a thin molybdenum carbide material.

Embodiment 2

[0029] (1) Place a copper foil with a thickness of 20 μm on the molybdenum oxide powder, place it in the reaction furnace tube, and then feed a mixed gas of hydrogen and argon at a rate of 150 sccm, wherein the volume ratio of hydrogen to argon is 2.5: 1;

[0030] (2) heating up to 1085°C at a rate of 100°C / min, keeping the temperature constant for 20min, and reacting for 20min after feeding acetylene at a rate of 5sccm;

[0031] (3) Cool down to 25°C at a rate of 15°C / min to prepare a thin molybdenum carbide material.

Embodiment 3

[0033] (1) Place a copper foil with a thickness of 50 μm on a molybdenum foil, place it in the reaction furnace tube, and then pass a mixed gas of hydrogen and argon at a rate of 200 sccm, wherein the volume ratio of hydrogen and argon is 3:1 ;

[0034] (2) heating up to 1090°C at a rate of 200°C / min, constant temperature for 30min, and reacting for 40min after feeding methane at a rate of 2.5sccm;

[0035] (3) Cool down to 25°C at a rate of 10°C / min to prepare a thin molybdenum carbide material.

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Abstract

The invention relates to an ultrathin molybdenum carbide material and a production method thereof and belongs to the technical field of preparation of molybdenum carbide materials. The method comprises the steps of (1) placing catalyst on a molybdenum source inside a reactor tube, and then inletting a protective atmosphere; (2) increasing the temperature to 900-1100 DEG C, maintaining the temperature for 0-30 min, and then inletting a carbon source for reaction for 10-60 min; (3) cooling down to 25 DEG C to obtain the ultrathin molybdenum carbide material. The production method of the ultrathin molybdenum carbide material is simple in preparation; the obtained ultrathin molybdenum carbide material is a two-dimensional material which gains catalytic properties and exists stably and can be widely applied to the technical fields of photoelectrocatalysis, absorption, sensing, nano energy, composite materials, thermoelectric materials, superconducting materials and the like.

Description

technical field [0001] The invention belongs to the technical field of molybdenum carbide material preparation, and in particular relates to a preparation method of an ultra-thin molybdenum carbide material and a product thereof. Background technique [0002] Graphene is a monoatomic layer carbon crystal material, and its discovery confirmed the stable existence of two-dimensional materials and opened up a new stage of research on two-dimensional materials. Transition metal carbides are a large family of materials that combine the properties of metals and ceramics due to the incorporation of carbon atoms into the metal lattice. Transition metal carbides not only have the advantages of high melting point, high stability, high hardness, good electrical and thermal conductivity, good corrosion resistance at high temperature, etc., but also have the catalytic properties of noble metals, and also have superconductivity and high thermoelectric conversion. performance and electroc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/949B82Y40/00
CPCC01P2002/72C01P2004/01C01P2004/03C01P2004/22
Inventor 沈俊朱兴国
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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