Method for rapidly preparing spherical mercury sulfide nanoparticles

Abstract

The invention belongs to the field of preparation of semiconductor nano-materials, particularly relates to a method for rapidly preparing spherical mercury sulfide nanoparticles, and provides the following scheme aiming at the problems that energy and time cannot be saved and mercury sulfide nano-particles with uniform shape and size and good dispersity cannot be synthesized in the prior art. Themethod comprises the following steps: S1, preparing a reaction mixed solution, namely adding 0.5 mmol of mercury nitrate, 0.5 mmol of sulfur powder and 0.15 g of polyvinylpyrrolidone into 500g of ethylene glycol at room temperature to prepare the mixed solution; S2, synthesis of mercury sulfide nanoparticles: transferring the mixed solution into an oil bath pot containing simethicone, and performing magnetic stirring to enable the mixed solution to react for 2 hours; and S3, separating the mercury sulfide nanoparticles: taking out the mixed solution from the bath pot, adding ultrapure water with the same volume as the mixed solution, centrifuging for 15 minutes, removing the supernatant, reserving the precipitate, washing the precipitate with the ultrapure water, and freeze-drying the precipitate to obtain the spherical mercury sulfide nanoparticles. A solvothermal synthesis system adopted by the invention can be used for preparing spherical nano mercury sulfide; the obtained sphericalmercury sulfide nanoparticles are single in crystal form, good in dispersity, uniform in shape and high in stability; the method and the technological process are simple, short in time consumption, low in reaction temperature and low in energy consumption; the raw materials are low in cost, easy to obtain and beneficial to industrial production.

Description

technical field [0001] The invention relates to the technical field of semiconductor nanomaterial preparation, in particular to a method for rapidly preparing spherical mercury sulfide nanoparticles. Background technique [0002] As a II-VI semiconductor material, mercury sulfide has high electron mobility, low band gap and significant pyroelectric and infrared photoconductive effects, so it shows a wide range of semiconductor materials, optoelectronic devices and infrared device materials. Application prospects; in principle, when the particle size of mercury sulfide is reduced to the nanometer level, its specific surface area is significantly increased, and the quantum size effect is significantly enhanced, thereby showing more special photoelectric properties; therefore, the synthesis of mercury sulfide nanomaterials is carried out It is of great significance to study the properties of [0003] At present, although there are many reports about the preparation methods of ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the disadvantages in the prior art that cannot save energy and time, and synthesize mercury sulfide nanoparticles with uniform shape and size and good dispersibility, by using ethylene glycol and polyvinylpyrrolidone as reducing agent and protective agent respectively, providing A Simple and Easy Preparation Method of Spherical Mercury Sulfide Nanoparticles

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