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Method for preparing molybdenum disulfide/graphene alternate intercalation structure material

A technology of molybdenum disulfide and graphene, which is applied in the field of chemistry and chemical engineering, can solve the problems of difficult control of molybdenum disulfide layer thickness, complicated preparation process, and low intercalation efficiency, and achieve thin intercalation thickness, easy-to-obtain reaction raw materials, and easy preparation low cost effect

Active Publication Date: 2018-01-05
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the shortcomings of the existing technology, especially the low intercalation efficiency of the existing preparation process, the use of a large amount of organic solvents causes a large amount of pollutants, and the difficulty in controlling the thickness of the molybdenum disulfide layer and the complicated preparation process.

Method used

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  • Method for preparing molybdenum disulfide/graphene alternate intercalation structure material
  • Method for preparing molybdenum disulfide/graphene alternate intercalation structure material
  • Method for preparing molybdenum disulfide/graphene alternate intercalation structure material

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Embodiment 1

[0034] A method for preparing molybdenum disulfide / graphene alternate intercalation structure material, comprising steps as follows:

[0035] (1) Ammonium heptamolybdate tetrahydrate and thiourea are dissolved in water respectively, fully stirred to obtain molybdenum source solution and sulfur source solution, surfactant cetyltrimethylammonium bromide is added in the sulfur source solution, Obtain a transparent solution; the molar ratio of sulfur in surfactant and thiourea is 1:6;

[0036] (2) According to the molar ratio of molybdenum element and sulfur element as 1:4.5, the transparent solution mixed with sulfur source and surfactant is gradually dropped into the molybdenum source solution and fully stirred to obtain a mixed solution, and the obtained mixed solution is sealed Add ethylene glycol into the autoclave as a pressure transmission medium and apply a pressure of 180MPa, heat the solution to 250°C for a constant temperature reaction for 8 hours, and obtain the reacti...

Embodiment 2

[0041] A method for preparing molybdenum disulfide / graphene alternate intercalation structure material, comprising steps as follows:

[0042] (1) Ammonium heptamolybdate tetrahydrate and thiourea are respectively dissolved in water, fully stirred to obtain molybdenum source solution and sulfur source solution, an appropriate amount of surfactant cetyltrimethylammonium bromide is added in the sulfur source solution, Obtain a transparent solution; the molar ratio of sulfur in surfactant and thiourea is 1:5;

[0043] (2) According to the molar ratio of molybdenum element and sulfur element as 1:4.5, the transparent solution mixed with sulfur source and surfactant is gradually dropped into the molybdenum source solution and fully stirred to obtain a mixed solution, and the obtained mixed solution is sealed Add ethanol into the autoclave as a pressure transmission medium and apply a pressure of 240MPa, heat the solution to 200°C for a constant temperature reaction for 4 hours, and ...

Embodiment 3

[0045] Embodiment 3: preparation method and process are identical with embodiment 1, difference is: step (2) reaction temperature is 230 ℃, and pressure transmission heat transfer medium is propanol.

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Abstract

The invention relates to a method for preparing a molybdenum disulfide / graphene alternate intercalation structure material. The method includes the following steps that a moderate molybdenum source and a moderate sulfur source are dissolved in water respectively, and are fully stirred to obtain even solutions; a surfactant is added into the sulfur source, then the obtained molybdenum-source solution is slowly dropped into a solution formed by the sulfur source and the surfactant, a uniform solution or colloid is formed, the uniform solution or colloid is heated to 100 DEG C to 300 DEG C at thepressure of 10 MPa to 300 MPa, and is reacted for 3 hours to 48 hours at the constant temperature, and after the reaction is end, a reaction system is naturally cooled to be the indoor temperature, and pressure is released; the obtained powder is washed, dried and calcined, and the molybdenum disulfide / graphene alternate intercalation structure material is obtained. The method is simple in preparing process and environmentally friendly, an intercalation structure of molybdenum disulfide and graphene can be obtained, the interlayer spacing of the molybdenum disulfide is amplified accordingly,and the method has the important application value in the research aspects of a high-efficiency photocatalyst and a new energy material.

Description

technical field [0001] The invention relates to a method for preparing a molybdenum disulfide / graphene alternate intercalation structure material, belonging to the technical field of chemistry and chemical engineering. Background technique [0002] Molybdenum disulfide is a narrow bandgap and semiconductor material with a two-dimensional structure. Due to its unique graphene-like layered structure, it is widely used in photocatalysis, new energy batteries, lubricants and other fields. Previous studies have found that molybdenum disulfide intercalation materials with wide interlayer spacing tend to have better electrochemical, catalytic, and lubricating properties. Therefore, finding a simple method to prepare molybdenum disulfide intercalation materials with wide interlayer spacing is of great significance for the development and application of nanotechnology. [0003] The currently used molybdenum disulfide graphene composite material preparation method often needs to prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06C01B32/184
Inventor 廉刚井涞荥崔得良焦世龙徐郑灏韩生会
Owner SHANDONG UNIV
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