A method for rapidly preparing spherical mercury sulfide nanoparticles

Abstract

The invention belongs to the field of semiconductor nanomaterial preparation, in particular to a method for rapidly preparing spherical mercury sulfide nanoparticles, aiming at the existing problem of not being able to save energy and time, and synthesizing mercury sulfide nanoparticles with uniform shape and size and good dispersibility. Propose the following scheme, which includes the following steps: S1: Preparation of reaction mixture: at room temperature, add 0.5mmol of mercury nitrate, 0.5mmol of sulfur powder, and 0.15g of polyvinylpyrrolidone to 500g of ethylene glycol to prepare a mixture; S2: Synthesis of mercury sulfide nanoparticles: transfer the mixed solution into an oil bath filled with dimethyl silicone oil, and perform magnetic stirring to make the mixed solution react for 2 hours; S3: Separation of mercury sulfide nanoparticles: transfer the mixed solution from the bath Take it out from the pot, add an equal volume of ultrapure water and centrifuge for 15 minutes, remove the supernatant to retain the precipitate, and wash the precipitate with ultrapure water, and the precipitate will be spherical mercury sulfide nanoparticles after freeze-drying. The solvothermal synthesis system of the present invention can be used to prepare spherical nano-mercuric sulfide; the obtained spherical nano-mercuric sulfide particles have a single crystal form, good dispersibility, uniform shape and high stability; the method and process are simple, time-consuming, and the reaction temperature Low energy consumption, low cost of raw materials, easy to obtain, and conducive 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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