Method for preparing rhenium diselenide nano-sheet

Abstract

The invention discloses a method for preparing a rhenium diselenide nano-sheet and belongs to the field of preparation of a novel two-dimensional nano material. The rhenium diselenide nano-sheet is formed through reducing a rhenium source and a selenium source through hydroxylammonium chloride by utilizing a hydrothermal method, reacting to obtain rhenium diselenide nano-particles and assembling the rhenium diselenide nano-particles. By adopting the method provided by the invention, the disadvantages of an existing preparation process of the rhenium diselenide nano-sheet that a preparation period is long, the cost is high, the operation is complicated and the like are overcome; the method is simple in production operation and good in repeatability and a reaction period is shortened; raw materials for producing are cheap and easy to obtain; the method has moderate reaction conditions, and energy consumption and cost are reduced, so that the method is suitable for large-scale production; the invention provides a reliable sample preparation method for application of the rhenium diselenide nano-sheet in electrical and optical aspects, and provides more potential scientific evidences and technical supports for enabling the rhenium diselenide nano-sheet to become a novel photoelectric material in the future.

Description

technical field [0001] The invention belongs to the field of preparation of novel two-dimensional nanometer materials, and in particular relates to a method for preparing rhenium diselenide nanosheets. Background technique [0002] Transition metal chalcogenides (TMDs) are a new type of two-dimensional semiconductor electronic materials with a graphene-like structure. Among them, metal sulfide and selenide are important semiconductor materials. Nano metal sulfide and selenide materials have special nonlinear optical properties, good photoluminescence and electroluminescence characteristics, significant quantum size effect, catalysis, storage Energy and other important physical and chemical properties, can be widely used in various light-emitting devices, laser detectors, nonlinear optical materials, sensing materials, etc. [0003] Among many two-dimensional semiconductor materials, rhenium (Re) chalcogenide ReS 2 and ReSe 2 It is a recently discovered two-dimensional sem...

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Problems solved by technology

[0005] B.Jariwala et al. in the literature titled "Synthesis and Characterization of ReS 2 andReSe 2 Layered Chalcogenide Single Crystals" ("Synthesis and Characterization of ReS 2 and ReSe 2 Layered chalcogenide single crystal ") discloses the improved Bridgman method to make rhenium diselenide single crystal, however, this method needs to be carried out under low vacuum and high temperature environment, and the reaction cycle is extremely long, which brings problems to the operation. Inconvenience and danger; M.Hafeez et al. in the literature titled "Chemical Vapor Deposition Synthesis of Ultrathin Hexagonal ReSe 2 Flakes for Anisotropic Raman Property and Optoelectronic Application ("Anisotropic Raman Properties and Optoelectronic Applications of Chemical Vapor Deposition Synthesis of Ultrathin ReSe2 Sheets") provides a chemical vapor deposition technique to prepare rhenium diselenide nanosheets method, the process requires complex control conditions and higher reaction temperature; D.B.Seley et al. in the literature titled "ReSe 2 nanotubes synthesized from sacrificial templates" ("Using sacrificial templates to synthesize ReSe 2 Nanotubes") discloses a method of using solvothermal technology to prepare rhenium diselenide nanotubes. This method needs to be divided into two steps, the reaction cycle is long, and the process is cumbersome

[0006] In summary, the current preparation of rhenium diselenide nanosheets still has problems such as long preparation period, high cost, and complicated operation, and large-scale and technological production cannot be realized. Therefore, the large-scale production of rhenium diselenide nanosheets faces challenges huge challenge

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