Preparation method of titanium selenide nanowire

Abstract

The invention relates to a preparation method of a titanium selenide nanowire. Titanium powder and selenium powder are evenly mixed according to the stoichiometric ratio and then pressed into sheets, and the sheets are placed between a cathode and an anode which are horizontally placed in a direct-current arc plasma discharge device. Under the protection of a water cooling system and an argon atmosphere, the air pressure is increased to 15-25 kPa, the reaction current is set to be 90-100 A, and a cathode and an anode are subjected to an arcing reaction. Black powder is collected at the lower edge of the graphite pot, and the microstructure of the black powder is titanium selenide nanowires with the length ranging from 1.5 micrometers to 3 micrometers and the diameter ranging from 20 nm to 100 nm. The fluorescence characteristic of the titanium selenide nanowire is tested, and the maximum emission peak of a fluorescence spectrum (PL) has a blue shift phenomenon.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic nanometer materials, and in particular relates to a preparation method of titanium selenide nanowires. Background technique [0002] Titanium selenide (TiSe 2 ) is a transition metal dihaloalkane (TMD) material with a hexagonal lattice, which is considered to be a promising functional class in many fields such as next-generation electronics and optoelectronic devices because of its good optical, electrical, and physicochemical properties. Material. By adjusting the microscopic morphology of nanomaterials, the photoelectric properties of nanomaterials can be improved. [0003] At present, TiSe synthesized by traditional methods 2 Usually two-dimensional layered materials. Sun (Chem.Eur.J, 2017, 24, 1193–1197) et al. Calcined the mixture of titanium powder and selenium powder for 48 hours to synthesize bulk TiSe by solid-state sintering method 2 , and then exfoliate multilayer TiSe from ...

AI Technical Summary

Problems solved by technology

Although traditional preparation methods have been successfully applied to TiSe 2 Synthetic process, but the shape of the product is single and difficult to control

These synthetic methods often face the disadvantages of long time consumption, high reaction temperature, simultaneous addition of multiple organic solvents, low yield or serious product agglomeration. Therefore, from the perspective of economic cost and environmental protection, it is urgent to develop an economical method. , rapid, efficient and stable synthetic pathway

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