Method for preparing zinc sulfide nanospheres

A technology of zinc sulfide and nanospheres, which is applied in the direction of zinc sulfide and nanotechnology, which can solve the problems of difficult control of product size and shape, harsh high-temperature reaction conditions, and complicated preparation process, and achieve simple equipment, good stability, and easy operation. simple effect

Inactive Publication Date: 2012-06-27
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have deficiencies to a certain extent, such as the size and shape of the product are difficult to control; the yield is not high; the high temperature reaction conditions are harsh or the preparation process is relatively complicated and the cost is relatively high.

Method used

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  • Method for preparing zinc sulfide nanospheres
  • Method for preparing zinc sulfide nanospheres
  • Method for preparing zinc sulfide nanospheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of zinc sulfide nanospheres of the present embodiment comprises the following steps:

[0028] 1) Dissolve 0.22 g zinc acetate and 0.05 g polyvinylpyrrolidone in 100 ml deionized water to make solution A; weigh 0.075 g thioacetamide and dissolve it in 50 ml deionized water to make solution B;

[0029] 2) Mix 100 ml of solution A and 50 ml of solution B as a reaction solution, and put the reaction solution in a water bath at 90 °C for 2 hours to obtain zinc sulfide nanospheres;

[0030] 3) After the water bath reaction, centrifuge the suspended reaction solution, and then wash the precipitate with deionized water and absolute ethanol;

[0031] 4) Dry the precipitate in a vacuum drying oven at 50°C for 5 hours to obtain white zinc sulfide powder.

[0032] A certain amount of surfactant polyvinylpyrrolidone is added to the zinc acetate solution, the purpose is to control the morphology of the product, and also to prevent particle agglomeration; the p...

Embodiment 2

[0034] The preparation method of zinc sulfide nanospheres of the present embodiment comprises the following steps:

[0035] 1) Dissolve 0.22 g zinc acetate and 0.15 g polyvinylpyrrolidone in 100 ml deionized water to make solution A; weigh 0.075 g thioacetamide and dissolve it in 50 ml deionized water to make solution B;

[0036] 2) Mix 100 ml of solution A and 50 ml of solution B as a reaction solution, and put the reaction solution in a water bath at 90 °C for 2 hours to obtain zinc sulfide nanospheres;

[0037] 3) After the water bath reaction, centrifuge the suspended reaction solution, and then wash the precipitate with deionized water and absolute ethanol;

[0038] 4) Dry the precipitate in a vacuum drying oven at 50°C for 5 hours to obtain white zinc sulfide powder.

[0039] A certain amount of surfactant polyvinylpyrrolidone is added to the zinc acetate solution, the purpose is to control the morphology of the product, and also to prevent particle agglomeration; the p...

Embodiment 3

[0041] The preparation method of zinc sulfide nanospheres of the present embodiment comprises the following steps:

[0042] 1) Dissolve 0.22 g zinc acetate and 0.15 g polyvinylpyrrolidone in 100 ml deionized water to make solution A; weigh 0.075 g thioacetamide and dissolve it in 50 ml deionized water to make solution B;

[0043] 2) Mix 100 ml of solution A and 50 ml of solution B as a reaction solution, put the reaction solution in a water bath at 90 °C for 4 hours to obtain zinc sulfide nanospheres;

[0044] 3) After the water bath reaction, centrifuge the suspended reaction solution, and then wash the precipitate with deionized water and absolute ethanol;

[0045] 4) Dry the precipitate in a vacuum drying oven at 60°C for 4 hours to obtain white zinc sulfide powder.

[0046] A certain amount of surfactant polyvinylpyrrolidone is added to the zinc acetate solution, the purpose is to control the morphology of the product, and also to prevent particle agglomeration; the purpo...

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Abstract

The invention discloses a method for preparing zinc sulfide nanospheres, which comprises the following steps: 1) preparing a solution A by dissolving zinc acetate and a surfactant in deionized water, and preparing a solution B by dissolving thioacetamide in deionized water; and 2) mixing the solution A and the solution B to obtain a reaction solution, reacting the reaction solution in a water bath and obtaining zinc sulfide nanospheres, wherein the particle size of the zinc sulfide nanospheres can be kept between 90 and 120 nanometers by controlling reaction conditions. The method has the characteristics of readily available raw material, simple equipment, easy operation, high efficiency, high speed and the like; and the prepared zinc sulfide nanospheres with regular form, high dispersity, controllable size, high yield and high stability are suitable for mass industrial production. The zinc sulfide nano material prepared by the method has a great application prospect in fields of fluorescent lamps, field emission flat-panel displays, light-emitting diodes, electroluminescent devices, solar cells and the like.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a preparation method of zinc sulfide nanospheres. Background technique [0002] Zinc sulfide is a typical II-VI wide bandgap semiconductor material with a wide range of applications, and the band gap at room temperature is 3.67eV. As a representative fluorescent material, also known as photoluminescent material, zinc sulfide semiconductor nanoparticles exhibit many unique properties different from bulk materials, and are widely used in fluorescent lamps for lighting, field emission flat panel displays, cathodoluminescence, light-emitting diodes, Electroluminescent devices, solar cells, dielectric filters, infrared windows, photocatalysis, sensors, and lasers have received extensive attention and research, and have become research hotspots. [0003] At present, there are many preparation methods for zinc sulfide semiconductor nanomaterials, such as γ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/08B82Y40/00
Inventor 李元
Owner SOUTHWEST UNIVERSITY
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