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Method for 1T-phase molybdenum disulfide/graphene nano composite material by hydrothermal process

A technology of nanocomposite materials and molybdenum disulfide, applied in chemical/physical processes, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as complex operations, harsh reaction conditions, and low yields, and achieve operational progress The effect of simplicity and mild experimental conditions

Inactive Publication Date: 2018-08-17
XINJIANG UNIVERSITY
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] Currently, the synthesis of 1T-MoS 2 It is mainly synthesized by alkali metal intercalation stripping method, liquid nitrogen-assisted lithiation method and carbon dioxide-induced phase transition method. These methods are complex in operation, harsh in reaction conditions, and low in yield. The prepared material has poor stability and is easily converted into 2H phase MoS 2

Method used

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  • Method for 1T-phase molybdenum disulfide/graphene nano composite material by hydrothermal process
  • Method for 1T-phase molybdenum disulfide/graphene nano composite material by hydrothermal process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 10 mg of graphene oxide and put it into 10 ml of water for 30 min to form a homogeneous solution, add 20 mg of ammonium molybdate, 40 mg of thiourea and 100 mg of citric acid into the above solution and stir until dissolved, then transfer the solution to the reaction kettle, put into the oven and heated to 200 o C was reacted for 24 h; after the reaction was completed, it was cooled to room temperature, the product was washed with water and ethanol, centrifuged, 60 o C dried to obtain 1T phase molybdenum disulfide / graphene nanocomposites.

Embodiment 2

[0023] Take 5 mg of graphene oxide and put it into 20 ml of water for 60 min to form a homogeneous solution, add 15 mg of molybdenum trioxide, 45 mg of thiourea and 100 mg of urea into the above solution and stir until dissolved, transfer the solution to the reaction kettle, put Oven heated to 240 o C was reacted for 12 h; after the reaction was completed, it was cooled to room temperature, the product was washed with water and ethanol, and centrifuged at 80 o C dried to obtain 1T phase molybdenum disulfide / graphene nanocomposites.

Embodiment 3

[0025] Put 20 mg of graphene oxide into 50 ml of water and ultrasonicate for 120 min to form a homogeneous solution, add 25 mg of sodium molybdate, 45 mg of thioacetamide and 120 mg of oxalic acid into the above solution and stir until dissolved, transfer the solution to the reaction kettle, Put in the oven and heat to 180 o C was reacted for 24 h; after the reaction was completed, it was cooled to room temperature, the product was washed with water and ethanol, centrifuged, 70 o C dried to obtain 1T phase molybdenum disulfide / graphene nanocomposites.

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Abstract

The invention provides a method for 1T-phase molybdenum disulfide / graphene nano composite material by a hydrothermal process. Oxidized graphene, a molybdenum source, a sulfur source and a reducing agent are respectively used as reactants to synthesize the 1T-phase molybdenum disulfide / graphene nano composite material through hydrothermal reaction. The method is low in raw material cost and simplein operation, and one-step preparation of the 1T-phase molybdenum disulfide / graphene nano composite material can be realized through the hydrothermal reaction. In addition, due to simplicity in preparation, high product yield, mild reaction conditions, product stability, less proneness to phase change and the like, a promising application prospect is realized.

Description

technical field [0001] The invention relates to a method for synthesizing 1T phase molybdenum disulfide / graphene nanocomposite material by hydrothermal method. Background technique [0002] Molybdenum disulfide (MoS 2 ) is a kind of "sandwich" structure formed by the middle layer of Mo atoms and the upper and lower layers of S atoms connected by strong covalent bonds, and the layers interact through weak van der Waals forces. MoS 2 There are three main crystal structures: 1T, 2H and 3R phases. Among them, the 2H and 3R phases exist in nature, and their Mo atoms coordinate with the surrounding 6 S atoms in a triangular prism configuration, which has semiconductor properties; while the 1T phase MoS 2 (1T-MoS 2 ) can only be obtained by synthesis. In the crystal structure, the Mo atom is coordinated with the surrounding 6 S atoms in an octahedral form, and because of its different electronic structure, it exhibits metallicity. [0003] 1T-MoS 2 Due to its unique optical a...

Claims

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Application Information

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IPC IPC(8): B01J27/051C25B1/04C25B11/06
CPCC25B1/04C25B11/04B01J27/051B01J35/33Y02E60/36
Inventor 贾巍周旭贾殿赠
Owner XINJIANG UNIVERSITY
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