Preparation method of monolayer MoS2 nano-sheet solution

A nanosheet and solution technology, applied in the field of nanomaterials, can solve the problems of no clear report on the stability of single-layer MoS2 solution, harsh reaction conditions, and difficult industrialization, etc., to achieve short preparation cycle, improved solubility and dispersion, and low cost Effect
CN102583547AInactive Publication Date: 2012-07-18CHANGAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGAN UNIV
Publication Date
2012-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a monolayer MoS2 nano-sheet solution. The preparation method provided by the invention comprises the following steps of weighing MoS2 powder, putting the MoS2 powder into a pyrrolidone solvent, carrying out magnetic stirring of the mixture, transferring the stirred mixture to a hydrothermal reactor, carrying out hydrothermal pre-treatment, adding a surfactant into the mixture subjected to hydrothermal pre-treatment, carrying out ultrasonic stripping by an ultrasonic destrustor, carrying out centrifugation treatment, and collecting a supernatant liquor, wherein the supernatant liquor is the monolayer MoS2 nano-sheet solution. Compared with the prior art for preparing a monolayer MoS2 nano-sheet solution by a reaction of MoS2 and alkyl lithium and ultrasonic stripping, the preparation method provided by the invention has the advantages of the adopted organic solvent is not sensitive to the environment; a whole preparation period is short; and the obtained monolayer MoS2 nano-sheets have better dispersibility and stability and a lower cost.
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Description

technical field

[0001] The invention belongs to the field of nanomaterials, in particular to a single-layer MoS synthesized by hydrothermal reaction pretreatment and ultrasonic liquid phase exfoliation 2 Preparation method of nanosheet solution. Background technique

[0002] transition metal sulfide MoS 2 It is a layered structure with strong chemical bonds in the layer and extremely weak van der Waals force between layers. By destroying the van der Waals force between layers, a single layer of MoS can be obtained 2 nanosheets, this two-dimensional structured MoS 2 Nanosheets have broad application prospects in the fields of nanoelectronics, friction, catalysis, energy and high-performance composite materials. Monolayer MoS is currently prepared 2 The methods of nanosheets include mechanical exfoliation and liquid phase exfoliation. The preparation amount of the mechanical exfoliation method is small, and it is difficult to meet the requirements of industrialization. C...

Claims

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