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Preparation method of multilayer molybdenum disulfide material

A technology of molybdenum disulfide and sulfur source, applied in the direction of molybdenum sulfide, etc., can solve the problems of being too expensive and expensive, and achieve the effect of low process conditions and cost, and wide application prospects

Active Publication Date: 2017-05-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The precursor used in this method (NH 4 ) 2 Mo 3 S 13 Too expensive and requires expensive supercritical drying equipment

Method used

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  • Preparation method of multilayer molybdenum disulfide material
  • Preparation method of multilayer molybdenum disulfide material
  • Preparation method of multilayer molybdenum disulfide material

Examples

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Embodiment 1

[0024] Embodiment 1, a kind of preparation method of multilayer molybdenum disulfide material (the sol-gel synthesis method of multilayer molybdenum disulfide material), carries out following steps successively:

[0025] 1), weighing 0.2g (0.16mmol) ammonium molybdate tetrahydrate as molybdenum source and 0.4g (5.32mmol) thioacetamide as sulfur source; Amide) was poured into 8ml of deionized water, placed on a stirring platform and stirred for 3 hours to completely dissolve the reagent.

[0026] 2) Add 0.05 g (0.13 mmol) of diethyltriaminepentaacetic acid as a chelating agent to the solution obtained in step 1), and stir for 3 hours to obtain a reddish-brown sol.

[0027] 3) Put the sol obtained in step 2) in an oven at 60° C., and obtain a brown gel after 12 hours.

[0028] 4) Continue drying the gel obtained in step 3) at 60° C. for 4 days to completely evaporate the water to obtain a xerogel.

[0029] 5) Put the xerogel obtained in step 4) into a tube furnace for heat tre...

Embodiment 2

[0030] Embodiment 2, change the weight of step 1) thioacetamide in embodiment 1) into 0.6g, and all the other are equal to embodiment 1.

Embodiment 3

[0031] Embodiment 3, change the weight of step 1) thioacetamide in embodiment 1) into 0.8g, all the other are equal to embodiment 1.

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Abstract

The invention discloses a preparation method of a multilayer molybdenum disulfide material. The method comprises the following steps: pouring ammonium molybdate tetrahydrate used as a molybdenum source and thioacetamide used as a sulfur source into deionized water, and sufficiently stirring until the ammonium molybdate tetrahydrate and thioacetamide are completely dissolved; adding a chelator, and uniformly stirring; standing the obtained sol in a 60+ / -5 DEG C drying oven for 12-36 hours; continuing drying the obtained gel at 60+ / -5 DEG C for 2-6 days; and carrying out heat treatment on the obtained dried gel at 600-1000 DEG C in a pipe furnace in an argon protective atmosphere for 2-6 hours to obtain the multilayer molybdenum disulfide material.

Description

technical field [0001] The invention relates to the field of preparation of molybdenum disulfide materials, in particular to a sol-gel synthesis method of multilayer molybdenum disulfide materials. Background technique [0002] Molybdenum disulfide belongs to the layered structure of hexagonal crystal system. A single layer of molybdenum disulfide consists of three atomic layers, of which the upper and lower layers are sulfur atomic layers separated by the middle molybdenum atomic layer, forming a so-called "sandwich structure". In a monolayer of molybdenum disulfide, each molybdenum atom is covalently bonded to six sulfur atoms, and each sulfur atom is covalently bonded to three molybdenum atoms. The multilayer or bulk molybdenum disulfide is composed of these single-layer "sandwich structures" combined by weak van der Waals forces. Due to the weak bonding force between the layers, when subjected to a small external shear force, the molecular layers will slide, so they are...

Claims

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Application Information

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IPC IPC(8): C01G39/06
CPCC01G39/06C01P2002/72C01P2004/03
Inventor 郭兴忠王子晨梁浩杨辉
Owner ZHEJIANG UNIV
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