Preparation method for preparing two-dimensional layered transition metal sulfide

Abstract

The invention discloses a preparation method for preparing two-dimensional layered transition metal sulfide. The two-dimensional layered transition metal sulfide is mainly an MAX-phase ceramic powderraw material composed of the following elements. Wherein the M element is Ti, Nb, V, Y, Nb, Mo, Ta, W, Hf, Cr and Mn; wherein the element A is Al, Si, Ge, Sn, Ga and Sb; powder of max-phase ceramic ofwhich the X element is B, C, N and Si and powder of MAB-phase ceramic are used as raw materials; in the atmosphere containing H2S, H2Se and H2Te gas, the powder is heated for more than 5 hours withinthe temperature range of 500-1400 DEG C, and organ-shaped TMDCS powder can be obtained after the obtained powder is subjected to ball milling. According to the method, a CVD method and a mechanical stripping high-cost method for preparing the TMDCS are eliminated, an organ-shaped structure which cannot be obtained through the CVD method and the mechanical stripping method can be obtained, the cost is obviously reduced, and application and popularization of a two-dimensional TMDCS material are often facilitated.

Description

[0001] The invention belongs to the technical field of materials, in particular to a preparation and synthesis method of a two-dimensional layered transition metal sulfide. Background technique [0002] 1. The discovery of graphene set off an upsurge in the research of two-dimensional materials, but the zero band gap of graphene seriously restricts its application in some fields. Two-dimensional layered transition metal dichalcogenides (referred to as TMDCs) represented by MoS2 have broad applications in many fields such as nanoelectronic devices and optoelectronics due to their special energy band structure, semiconducting or superconducting properties, and excellent mechanical properties. The application prospect has aroused the interest of many researchers and has become a research hotspot in the field of low-dimensional functional materials in recent years. Two-dimensional layered transition metal sulfides (TMDCS) are emerging two-dimensional layered materials composed of ...

AI Technical Summary

Problems solved by technology

However, the practical application of 2D materials, like many other emerging materials, is still constrained by the scaling of materials

[0004] 3. The popularization and use of two-dimensional TMDCS materials must first solve its low-cost batch preparation method. The existing CVD method and mechanical exfoliation method are very expensive and the output is very low.

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