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Synthesis process of nanometer silver sulfide/copper sulfide in controlled shape

A technology of nanostructure and synthesis method, applied in the direction of copper sulfide, chemical instruments and methods, silver compounds, etc., can solve the problems of low yield and single nanostructure of silver sulfide, and achieve high yield, controllable shape, and reaction temperature low effect

Inactive Publication Date: 2007-01-03
HARBIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the reported synthesis techniques, they are basically carried out at higher temperatures (above 100°C), and the synthesized silver sulfide (or copper sulfide) nanostructure is single, and the yield is very low (20-30%)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0006] Specific embodiment one: this embodiment prepares silver sulfide / copper sulfide nanostructure according to the following method: under magnetic stirring, the concentration is 6~15mmol / L silver nitrate (or cupric chloride) solution, is added dropwise to concentration is 9 ~52.5mmol / L sodium thiosulfate solution, its total volume is 100ml, the molar concentration ratio Na 2 S 2 o 3 : AgNO 3 (CuCl 2 )=1.5~3.5, then add 2.0~3.5mmol cetyltrimethylammonium bromide (CTAB) to the above mixture, stir vigorously for 30min at a temperature of 30~60°C to completely dissolve CTAB, then add Adjust the pH of the solution to 1-5 with acid, continue heating at the same temperature for 1-8 hours, and cool naturally to obtain the product.

[0007] By regulating Na 2 S 2 o 3 , AgNO 3 (CuCl 2 ) and CTAB, square, oval, and spherical nanoparticles can be synthesized; square, circular chain-like nanorods; nanobelts and nanofilms can be synthesized.

specific Embodiment approach 2

[0008] Specific implementation mode two: In this implementation mode, the synthetic method of silver sulfide nanocube is taken as an example: 50mlAgNO 3 (20mmol / L) solution was added dropwise to 50ml Na 2 S 2 o 3 (44mmol / L) solution, under magnetic stirring, add 3mmol CTAB to the above mixture, continue stirring at 30-40°C for 30min to completely dissolve CTAB, and use 1mol / LHNO 3 Adjust the pH of the mixture to 1-2.5, heat at the same temperature for 2-3 hours, cool naturally, centrifuge, wash with carbon disulfide, and dry to obtain the product.

specific Embodiment approach 3

[0009] Specific implementation mode three: In this implementation mode, the synthesis method of silver sulfide circular chain nanorods is taken as an example: 50ml AgNO 3 (20mmol / L) solution was added dropwise to 50ml Na 2 S 2 o 3 (48~60mmol / L) solution, under magnetic stirring, add 3mmol CTAB to the above mixture, continue stirring at 30~40°C for 30min to completely dissolve CTAB, and use 1mol / LHNO 3 Adjust the pH of the mixture to 2-3, heat at the same temperature for 1.5-3.5 hours, cool naturally, centrifuge, wash with carbon disulfide, dry, and obtain the product.

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Abstract

The synthesis process of nanometer silver sulfide / copper sulfide in controlled shape relates to shape controlling synthesis technology of silver sulfide / copper sulfide in nanometer structure. The present invention aims at lowering the synthesis temperature of silver sulfide / copper sulfide, and raising the yield and structure controllability. The technological scheme is that under magnetic stirring, silver nitrate or copper chloride solution of 6-15 mmol / L concentration is drop-by-drop added into sodium thiosulfate solution of 9-52.5 mmol / L concentration, cetyl trimethyl ammonium bromide in 2.0-3.5 mmol is then added into the solution, the solution is stirred strongly at 30-60 deg.c for 30 min, acid is added to regulate pH to 1-5, and through further heating at the same temperature for 1-8 hr and natural cooling, the product is obtained.

Description

technical field [0001] The invention relates to a shape-controlled synthesis technology of silver sulfide or copper sulfide nanostructures. Background technique [0002] At present, there are few reports on the synthesis technology of silver sulfide (or copper sulfide) nanostructures at home and abroad. In the reported synthesis techniques, they are basically carried out at higher temperatures (above 100° C.), and the synthesized silver sulfide (or copper sulfide) has a single nanostructure, and the yield is very low (20-30%). The total number of reports on the shape-controlled synthesis technology of silver sulfide and copper sulfide nanostructures is less than 10 documents, and they are limited to the shape control of zero-dimensional nanocrystallized powders. Contents of the invention [0003] The purpose of the present invention is mainly to reduce the synthesis temperature of silver sulfide (or copper sulfide), improve the controllability of its yield and structure. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G5/00C01G3/12
Inventor 孙玉增周百斌牟洪臣初丽梅徐学勤
Owner HARBIN NORMAL UNIVERSITY
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