Method for preparing rhenium disulfide nanosheets

Abstract

The invention discloses a method for preparing rhenium disulfide nanosheets, and belongs to the field of preparation of novel two-dimensional nanomaterials. The method includes the steps that ammonium perrhenate serves as a rhenium source, thiourea serves as a sulfur source, hydroxylamine hydrochloride serves as a reducing agent, the three reactants are dissolved in solvent water, and a chemical reaction is carried out by regulating the reaction temperature and reaction time; then, a product is cleaned and dried; finally, rhenium disulfide nanosheets are synthesized. The method is simple in operation process, high in efficiency, good in repeatability and low in cost, and high-quality rhenium disulfide nanosheets can be papered in a large batch; meanwhile, the method provides a reliable sample preparation method for application of rhenium disulfide nanosheets in electrics and optics.

Description

technical field [0001] The invention belongs to the field of preparation of novel two-dimensional nanometer materials, in particular to a method for preparing rhenium disulfide nanosheets. Background technique [0002] Two-dimensional semiconductor is an emerging electronic material with graphene-like structure, which has excellent electrical, optical, magnetic, mechanical and other properties, and can be applied in different technical fields, so it has become one of the hotspots in the field of material science research today. . Among many two-dimensional semiconductor materials, rhenium (Re) sulfide ReS 2 It is a recently discovered two-dimensional semiconductor material with weak interlayer coupling and a unique twisted 1T structure. The symmetry of the lattice structure is one of the important factors determining the properties of materials. Most of the studied 2D materials have high lattice symmetry and thus exhibit isotropy. Reducing lattice symmetry in transition ...

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Problems solved by technology

[0004] At present, the synthesis method of rhenium disulfide nanosheets has the following reports: T.Fujita et al. in the literature titled "Chemically exfoliated ReS 2 nanosheets" ("ReS prepared by chemical exfoliation method 2 Nanosheets") were prepared by chemical exfoliation technology rhenium disulfide nanosheets, this method needs to be carried out in an inert gas protection environment, and the lithium compound used is flammable in the air, which brings inconvenience and danger to the operation

N.Al-Dulaimi etc. in literature titled "Sequential bottom-up and top-down processing for the synthesis of transitionmetal dichalcogenide nanosheets: the case of rhenium disulfide (ReS 2 )" ("Sequential bottom-up and top-down processing to synthesize transition metal dichalcogenide nanosheets: rhenium disulfide (ReS 2 ) in the case of ") using two techniques of spray-assisted chemical vapor deposition and liquid phase stripping to prepare rhenium disulfide nano-layers. This method requires two steps of operation. Spray-assisted chemical vapor deposition requires high temperature and the process is cumbersome.

J.Gao et al. in the literature titled "Vertically Oriented Arrays of ReS 2 Nanosheets for Electrochemical Energy Storage and Electrocatalysis" ("Vertically aligned ReS for electrochemical energy storage and electrocatalysis 2 The vertically oriented rhenium disulfide nanosheets were prepared by chemical vapor deposition technique in the nanosheets"), which requires complex control conditions and high reaction temperature

Therefore, there are still huge challenges in the low-cost, large-scale preparation of rhenium disulfide nanosheets.

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