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Method for preparing silver selenide nanometer material

A technology of silver selenide and nanoparticles, which is applied in the field of preparation of silver selenide nanomaterials, can solve the problems that limit the preparation and application of composite nanomaterials, and achieve the effects of easy promotion, good biocompatibility, and low energy consumption

Inactive Publication Date: 2009-10-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many existing technologies that have successfully synthesized Ag 2 Se 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 the development of Ag 2 Preparation and Application of Se Composite Nanomaterials

Method used

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  • Method for preparing silver selenide nanometer material
  • Method for preparing silver selenide nanometer material
  • Method for preparing silver selenide nanometer material

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (a) Weigh 0.630g, add 5mmol of anhydrous sodium sulfite (Na 2 SO 3 ) and 0.395g, the selenium powder of closing 5mmol was dissolved in 100mL distilled water and refluxed 24 hours, made sodium selenosulfate solution;

[0022] (b) Add 5 mL of 50 mM AgNO to 10 mL of 3 mg / mL bovine serum albumin (purity > 99.8%, molecular weight 68,000) in water 3 solution, and vigorously stirred at room temperature, and left to stand in vacuum nitrogen for 2 hours to make a silver ion protein mixture;

[0023] (c) Get 5mL of 50mM sodium selenosulfate solution in (a), add in the silver ion protein mixed solution in (b) and then stand still after slight stirring to make selenium-silver protein mixed solution;

[0024] (d) Leave the selenium-silver protein mixture at room temperature for 24 hours and then centrifuge at 15,000 rpm for 10 minutes. The resulting black solid is washed three times with distilled water and ethanol, and then vacuum-dried at 30°C After 12 hours, silver selenide na...

Embodiment 2

[0026] (a) take by weighing 0.630g, the anhydrous sodium sulfite (Na2SO3) of 5mmol and 0.395g, the selenium powder of 5mmol were dissolved in 100mL distilled water and refluxed for 24 hours to make sodium selenosulfate solution;

[0027] (b) Add 5 mL of 50 mM AgNO solution to 10 mL of 3 mg / mL bovine hemoglobin solution, and vigorously stir at room temperature, vacuumize and store in nitrogen for 6 hours to make a silver ion protein mixture;

[0028] (c) Get 5mL 50mM Na2SeSO3 solution in (a), add (b) in the silver ion protein mixed solution and then stand still after slight stirring to make selenium-silver protein mixed solution;

[0029] (d) Leave the selenium-silver protein mixture at room temperature for 48 hours and then centrifuge at 15,000 rpm for 10 minutes. The resulting black solid is washed three times with distilled water and ethanol, and then vacuum-dried at 30°C After 12 hours, silver selenide nanomaterials were made.

Embodiment 3

[0031] (a) Weigh 0.630g, add 5mmol of anhydrous sodium sulfite (Na 2 SO 3 ) and 0.395g, the selenium powder of closing 5mmol was dissolved in 100mL distilled water and refluxed 24 hours, made sodium selenosulfate solution;

[0032] (b) Add 5 mL of 50 mM AgNO to 10 mL of 3 mg / mL porcine serum albumin in water 3 solution, and vigorously stirred at room temperature, and left to stand in vacuum nitrogen for 2 hours to make a silver ion protein mixture;

[0033] (c) Get 5mL 50mM Na2SeSO3 solution in (a), add (b) in the silver ion protein mixed solution and then stand still after slight stirring to make selenium-silver protein mixed solution;

[0034] (d) Leave the selenium-silver protein mixture at room temperature for 96 hours and then centrifuge at 15,000 rpm for 10 minutes. The resulting black solid is washed three times with distilled water and ethanol, and then vacuum-dried at 30°C After 12 hours, silver selenide nanomaterials were made.

[0035] Compared with the prior ar...

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Abstract

The invention provides a method for preparing a silver selenide nanometer grain in the technical field of the composite nanometer material. The method comprises the following steps of: preparing sodium selenosulfate solution; preparing silver ion protein mixed liquor; preparing selenium-silver protein mixed liquor; carrying out centrifugation treatment; and carrying out drying treatment in vacuum to prepare the silver selenide nanometer material finally. The method has simple and novel process, fewer equipment and low energy consumption, is friendly to environment, and prepares the silver selenide nanometer material with uniform size.

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 selenide nanomaterials. Background technique [0002] Ag 2 As a new class of functional materials, Se composite nanomaterials have become one of the research hotspots at home and abroad. Ag 2 Se-combined nanomaterials have special properties, and its high-temperature phase (β-Ag 2 Se, >133°C) is a superionic conductor, and this solid electrolyte can be used to prepare solid electrochemical sensors, magnetic field sensors, multifunctional ion-selective electrodes, nonlinear optical devices, and secondary photorechargeable batteries; and its low temperature Phase (α-Ag 2 Se) has a narrow band gap, and its nanocrystals are widely used as photosensitizers in photosensitive agents and thermochromic materials in the photography industry. In addition, α-Ag 2 Se has a relatively high thermoelectric coefficien...

Claims

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Application Information

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IPC IPC(8): C01B19/04B82B3/00
Inventor 黄鹏孔毅飞高峰崔大祥
Owner SHANGHAI JIAO TONG UNIV
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