Preparation method of silver sulfide nano particle

A technology of nano-particles and silver sulfide, applied in the direction of nano-structure manufacturing, chemical instruments and methods, nano-technology, etc., can solve the problems of restricting Ag, and achieve the effect of novel preparation process, easy promotion, simple and novel

Inactive Publication Date: 2009-10-21
SHANGHAI JIAO TONG UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] After searching the prior art, it was found that although many technologies have successfully synthesized Ag 2 S composite nanomaterials, but some of these existing technologies require special equipment, and some require harsh reaction conditions such as high temperature and high pressure, which largely limits Ag 2 Preparation and Application of S Composite Nanomaterials

Method used

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  • Preparation method of silver sulfide nano particle
  • Preparation method of silver sulfide nano particle
  • Preparation method of silver sulfide nano particle

Examples

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Embodiment 1

[0021] Such as figure 1 As shown, the present embodiment prepares silver sulfide nanoparticles through the following steps:

[0022] (a) Weigh 10 mg of bovine serum albumin and dissolve it in 10 mL of deionized water, add 5 mL of AgNO 3 The solution was vigorously stirred at room temperature, and left to stand for 2 hours in vacuum nitrogen to make a silver ion-protein mixture;

[0023] The purity of the bovine serum albumin is >99.8%, and the molecular weight is 68000;

[0024] The concentration of the AgNO3 solution is: 50mmol / L;

[0025] (b) Weigh 0.0188g thioacetamide (CH 3 CSNH 2 ) was dissolved in 5mL of deionized water, added to the silver ion protein mixture in (a) and then left still after slight stirring to make a silver-sulfur protein mixture;

[0026] (c) Put the silver-sulfur protein mixture at room temperature for 96 hours, centrifuge at 15,000 rpm for 10 minutes, wash the black solid three times with distilled water and ethanol, and then vacuum-dry it at 30...

Embodiment 2

[0029] (a) Weigh 20 mg of bovine hemoglobin and dissolve it in 10 mL of deionized water, add 5 mL of AgNO 3 The solution was vigorously stirred at room temperature, and left to stand for 2 hours in vacuum nitrogen to make a silver ion-protein mixture;

[0030] The AgNO 3 The concentration of the solution is: 50mmol / L;

[0031] (b) Weigh 0.0188g thioacetamide (CH 3 CSNH 2 ) was dissolved in 5mL of deionized water, added to the silver ion protein mixture in (a) and then left still after slight stirring to make a silver-sulfur protein mixture;

[0032] (c) Put the silver-sulfur protein mixture at room temperature for 96 hours, centrifuge at 15,000 rpm for 10 minutes, wash the black solid three times with distilled water and ethanol, and then vacuum-dry it at 30°C for 12 hours , made of silver sulfide nanoparticles.

Embodiment 3

[0034] (a) Weigh 30 mg of porcine serum albumin and dissolve it in 10 mL of deionized water, add 5 mL of AgNO 3 The solution was vigorously stirred at room temperature, and left to stand for 2 hours in vacuum nitrogen to make a silver ion-protein mixture;

[0035] The AgNO 3 The concentration of the solution is: 50mmol / L;

[0036] (b) Weigh 0.0188g thioacetamide (CH 3 CSNH 2 ) was dissolved in 5mL of deionized water, added to the silver ion protein mixture in (a) and then left still after slight stirring to make a silver-sulfur protein mixture;

[0037] (c) The silver-sulfur protein mixture solution was left to react at room temperature for 96 hours, centrifuged at 15,000 rpm for 10 minutes, and the black solid obtained was washed three times with distilled water and ethanol successively, and then vacuum-dried at 30°C for 12 hours. Hours, made of silver sulfide nanoparticles.

[0038] The Ag obtained in present embodiment 1~3 compared with prior art 2 The S nanoparticles...

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Abstract

The invention relates to a preparation method of silver sulfide nano particles, belonging to the technical field of nano composite material. The preparation method comprises the following steps: preparing silver ion protein mixed solution; preparing silver-sulfur protein mixed solution; carrying out centrifuge treatment and vacuum drying treatment and preparing into the silver sulfide nano particles. The method has simple and novel technique, little equipment quantity and low energy consumption and is environment-friendly and the prepared nano particle is spherical.

Description

technical field [0001] The invention relates to a preparation method in the technical field of nanocomposite materials, in particular to a preparation method of silver sulfide nanoparticles. Background technique [0002] Sulfide semiconductor nanomaterials have attracted people's attention because of their novel photoelectric physical properties, partial electronic conductivity and partial ion conductivity, and can be used as superionic conductors. Among them, silver sulfide semiconductors have been extensively studied due to their catalytic properties and promising photoelectric and thermoelectric properties. [0003] Silver sulfide is a direct narrow-bandgap semiconductor of I~VI groups, and has stable chemical properties and excellent optical limit properties. It has been widely used in manufacturing industries such as photovoltaic cells, photoconductive elements, infrared detectors, and fast ion conductors. In addition, Ag 2 S nanoparticles have good lubricating effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G5/00B82B3/00
Inventor 黄鹏孔毅飞高峰崔大祥
Owner SHANGHAI JIAO TONG UNIV
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