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Method for preparing zinc sulfide semiconductor nanoparticles

A technology of nano-particles and zinc sulfide, applied in the direction of zinc sulfide, can solve the problem of difficult control of the reaction, and achieve the effect of good compatibility

Inactive Publication Date: 2009-09-16
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can solve the existing problems in the existing preparation methods, such as the difficult control of the reaction, the environmental friendliness of the reaction process, and the use of high-cost organic surfactants with complex structures.

Method used

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  • Method for preparing zinc sulfide semiconductor nanoparticles
  • Method for preparing zinc sulfide semiconductor nanoparticles
  • Method for preparing zinc sulfide semiconductor nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 44mg of zinc acetate, 62mg of thiourea, 500mg of polyvinylpyrrolidone, and 79g of ethanol into a 250ml three-necked reaction flask. After the temperature of the oil bath is slowly raised to 80°C, under the condition of electromagnetic stirring, the reaction is carried out at a constant temperature for 240 minutes. After cooling the reaction product, the ethanol sol containing zinc sulfide semiconductor nanoparticles can be obtained. Use a rotary evaporator to concentrate the primary product obtained from the above reaction, and then vacuum-dry the precipitate at 40°C for 8-12 hours to obtain a surface-coated product made of macromolecular surfactant polyvinylpyrrolidone. ZnS semiconductor nanoparticles. The obtained zinc sulfide nanoparticles can be better dispersed in polar solvents such as ethanol and water. The results of ultraviolet-visible spectrometry of the samples dispersed in ethanol show that, compared with bulk zinc sulfide semiconductor materials, zinc ...

Embodiment 2

[0022] Add 44mg of zinc acetate, 31mg of thiourea, 100mg of polyvinylpyrrolidone, and 79g of ethanol into a 250ml three-necked reaction flask, and slowly raise the temperature of the oil bath to 80°C. Minutes, after cooling the reaction product, the ethanol sol containing zinc sulfide semiconductor nanoparticles can be obtained. Use a rotary evaporator to concentrate the primary product obtained from the above reaction, and then vacuum-dry the precipitate at 40°C for 8-12 hours to obtain a surface-coated product made of macromolecular surfactant polyvinylpyrrolidone. ZnS semiconductor nanoparticles. The obtained zinc sulfide nanoparticles can be better dispersed in polar solvents such as ethanol and water. The results of ultraviolet-visible spectrometry of the samples dispersed in ethanol show that, compared with bulk zinc sulfide semiconductor materials, zinc sulfide semiconductor nanoparticles can produce quantum size effects.

Embodiment 3

[0024] Add 22mg of zinc acetate, 31mg of thiourea, 200mg of polyvinylpyrrolidone, and 111g of ethylene glycol into a 250ml three-necked reaction flask. After the temperature of the oil bath is slowly raised to 160°C, under the condition of electromagnetic stirring, the reaction is carried out at a constant temperature for 60 Minutes, after cooling the reaction product, the ethylene glycol sol containing zinc sulfide semiconductor nanoparticles can be obtained. The primary product after centrifugation is vacuum-dried at 40° C. for 8-12 hours to obtain zinc sulfide semiconductor nanoparticles surface-coated by macromolecule surfactant polyvinylpyrrolidone. The obtained zinc sulfide nanoparticles can be better dispersed in polar solvents such as ethanol and water. The results of ultraviolet-visible spectrometry of samples dispersed in ethanol show that, compared with the bulk phase of zinc sulfide semiconductor materials, zinc sulfide semiconductor nanoparticles can produce quant...

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Abstract

The invention provides a method for preparing zinc sulfide semiconductor nanoparticles. The method has the main technical characteristics that zinc acetate and sulfocarbamide are selected as initial reactants; polyvinylpyrrolidone is selected as a macromolecular surfactant; the materials are mixed according to arbitrary proportion; water, ethanol, glycol and N,N-dimethylfomamide are used as reaction mediums; and the zinc sulfide semiconductor nanoparticles are obtained through chemical reaction of the solution. The method aims to solve the problems that the prior preparation method is difficult to control the reaction, is environment-friendly in the reaction process and uses an organic surfactant with high cost and complex structure, and the like. The method has the advantages that the obtained zinc sulfide semiconductor nanoparticles can generate quantum size effect and can be well dispersed in the water, the ethanol and other polar solvents.

Description

Technical field: [0001] The invention belongs to the synthesis technology of solution chemical method, in particular to a preparation method of zinc sulfide semiconductor nanoparticles. Background technique: [0002] ZnS semiconductor nanomaterials are an important research direction in the field of nanomaterials. Traditional zinc sulfide materials have important properties such as photoluminescence, electroluminescence and photocatalysis, and have important applications in optoelectronic devices, light-emitting diodes, and field emission flat panel displays. With the continuous development and improvement of nanomaterial science, the synthesis, preparation and application of zinc sulfide semiconductor nanomaterials have also attracted extensive attention from scientists all over the world. This is because, compared with traditional bulk zinc sulfide materials, nano-zinc sulfide materials can produce quantum size effects and surface effects, so that they can be further appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/08
Inventor 陈延明
Owner SHENYANG POLYTECHNIC UNIV
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