A kind of non-layered metal sulfide nanosheet and preparation method thereof

A metal sulfide, non-layered technology, applied in the preparation of sulfide/polysulfide, chemical instruments and methods, lead sulfide, etc. problem, to achieve the effect of simple preparation, good application prospects and simple raw materials
CN109928369BActive Publication Date: 2020-11-24TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2020-11-24

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Abstract

The invention discloses a preparation method of a unstratified metal sulfide nanosheet. The preparation method of the unstratified metal sulfide nanosheet comprises the following steps: dissolving metal salt and a sulfur source in an organic solvent, and uniformly mixing for reacting to obtain a first muddy solution; heating till the first muddy solution is clear and transparent, introducing inertia gas, performing an illumination reaction, and then cooling to room temperature to obtain a second muddy solution; washing, centrifugally separating and drying to obtain the unstratified metal sulfide nanosheet. The preparation method provided by the invention has the advantages of few raw material kinds, simple process, mild conditions, universality and controllable nanosheet appearance. Moreover, the unstratified metal sulfide nanosheet prepared by the method is small in thickness, being 1.2 to 9 nm, and has high anisotropy and crystallinity, and good application prospects.
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Description

technical field

[0001] The present invention relates to the field of metal sulfide synthesis. More specifically, it relates to a non-layered metal sulfide nanosheet and a preparation method thereof. Background technique

[0002] Metal sulfides are a common class of semiconductors. Many common metal sulfides have wide band gaps, such as PbS, Cu 2 S, CdS, etc., therefore have good light absorption in the visible region or near ultraviolet region, and the appropriate band edge position makes these metal sulfides have excellent and efficient photoresponsive activity. When the metal sulfide in the bulk phase is made into a nanosheet structure, due to the quantum size effect, the electronic band structure of the metal sulfide changes significantly. All have great application value.

[0003] For MoS 2 , SnS 2 And other partial sulfides, whose bulk phase is a layered material, and the layers are connected by relatively weak van der Waals force, so physical exfoliation can be u...

Claims

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