Preparation method of star shaped copper sulfide

A copper sulfide and surfactant technology, applied in copper sulfide and other directions, can solve the problems of non-uniform morphology, wide product size distribution, and large amount of surfactant, and achieve no environmental pollution, mild and easy-to-control conditions, and no energy. The effect of consumption

Inactive Publication Date: 2008-07-30
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional surfactants are used in the emulsion synthesis in the past, and most of them have defects such as large amount of surfactant, wide size distribution of the product, and inconsistent morphology.

Method used

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  • Preparation method of star shaped copper sulfide
  • Preparation method of star shaped copper sulfide
  • Preparation method of star shaped copper sulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation contains 0.1mol / L Cu 2+ The microemulsion A, wherein the mixed mass content of surfactant (12-3-12) and alcohol is 25%, the molar ratio ω of water and surfactant 0 is 5, and the rest is the content of the oil phase; the content of each component of the corresponding emulsion contains and Cu 2+ S with a molar ratio of 7.5 2- microemulsion B. While stirring, add emulsion B to emulsion A, stop stirring when brown color appears, and store at room temperature for 24 hours. Centrifugal separation, washing and drying to obtain needle-shaped copper sulfide nanocrystals. Such as figure 1 . Under this condition, star-shaped copper sulfide has not been obtained due to the limitation of the emulsion structure.

Embodiment 2

[0032] Preparation contains 0.2mol / L Cu 2+ The microemulsion A, wherein the mixed mass content of surfactant (12-3-12) and alcohol is 25%, the molar ratio ω of water and surfactant 0 is 30, and the rest is the content of the oil phase; the content of each component of the corresponding emulsion contains and Cu 2+ S with a molar ratio of 30 2- microemulsion B. While stirring, add emulsion B to emulsion A, stop stirring when brown color appears, and store at room temperature for 4 hours. Centrifugal separation, washing and drying to obtain star-shaped copper sulfide nanocrystals. Such as figure 2 . It can be seen that the increase of water content changes the structure of the emulsion and affects the morphology of the product, but because the time is too short, the crystallinity is not good.

Embodiment 3

[0034] Preparation contains 0.2mol / L Cu 2+ The microemulsion A, wherein the mixed mass content of surfactant (12-3-12) and alcohol is 25%, the molar ratio ω of water and surfactant 0 is 30, and the rest is the content of the oil phase; the content of each component of the corresponding emulsion contains and Cu 2+ S with a molar ratio of 25 2- microemulsion B. While stirring, add emulsion B to emulsion A, stop stirring when brown color appears, and store at room temperature for 12 hours. Centrifugal separation, washing and drying to obtain star-shaped copper sulfide nanocrystals. Such as image 3 . It can be seen that when the aging time is long enough, the crystallinity is intact.

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Abstract

The present invention belongs to the field of inorganic metal nano material technology, and relates to a method for synthesizing star cupric sulfide by means of reaction in microemulsion. It mainly includes the following steps: using new-type microemulsion formed from quaternary cationic Gemini surfactant as template, controlling emulsion synthesis condition, making centrifugal separation and drying so as to obtain the star cupric sulfide with narrow size distribution. The prepared cupric sulfide has extensive application in the fields of pigment, catalyst, color indicator of aniline black and semiconductor material, etc.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, and in particular relates to a preparation method of copper sulfide with a new star shape and narrow size distribution. Background technique [0002] Copper sulfide's metal-like conductivity, chemical sensitivity, and desirable properties for solar energy absorption make it a substance of great interest. Copper sulfide is not only an excellent semiconductor material, but also widely used in pigments, catalysts, and nigrosine color indicators. The special properties endowed by the nanoscale structure will enable copper sulfide to be used in a wider range of fields. [0003] Synthetic copper sulfide nanocrystals mainly contain the following methods at present: solid state reaction [I.P.Parkin, Chem. .1993, 115, 3316], reduction method [X.Jiang, Y.Xie, J.Lu, W.He, L.Zhu, Y.Qian, J.Mater.Chem.2000, 10, 2193], hydrothermal Synthetic method [Q.Lu, F.Gao, D.Zhao, Nanotechnology....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/12
Inventor 刘洪来陈立飞尚亚卓徐建彭昌军
Owner EAST CHINA UNIV OF SCI & TECH
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