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Preparation method of nano copper selenide

A copper selenide, nanotechnology, applied in the direction of chemical instruments and methods, binary selenium/tellurium compounds, copper compounds, etc., can solve the problems of high cost, product agglomeration, high risk, etc., and achieve low cost and simple operation Effect

Inactive Publication Date: 2005-03-30
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

These methods mainly focus on the preparation of nano copper selenide by sonochemical method, microwave assisted heating method, hydrothermal method and solvothermal method. In these methods, ultrasonic radiation, microwave radiation and hydrothermal method, high temperature in solvothermal method High pressure provides the necessary negative divalent selenium ions for the generation of nano-copper selenide. Although the above methods are simple in process, they generally have the disadvantages of serious product agglomeration, expensive equipment, high cost, and high risk.

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  • Preparation method of nano copper selenide
  • Preparation method of nano copper selenide
  • Preparation method of nano copper selenide

Examples

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Embodiment 1

[0018] ①In a 50mL quartz Erlenmeyer flask, dissolve 0.2g copper nitrate in 26mL deionized water, add disodium edetate at a molar ratio of 1:1 to obtain divalent copper ions and edetate di Sodium complexes——aqueous solution of ethylenediaminetetraacetic acid and copper complex anions.

[0019] ② Dissolve 0.06 mol of anhydrous sodium sulfite in 100 mL of deionized water, then add 0.02 mol of selenium powder, and reflux for 5 hours to obtain a 0.2 M aqueous sodium selenosulfate solution.

[0020] ③ Measure 4mL of the sodium selenosulfate aqueous solution prepared in step ② and add it to the aqueous solution of ethylenediaminetetraacetic acid copper complex anion prepared in step ①, pass nitrogen gas for 15 minutes, and then place the Erlenmeyer flask in a 250W high-pressure mercury lamp Irradiate at a distance of 20 cm for 4 hours, and use cooling water to keep the reaction system at room temperature. The obtained product was centrifuged, washed three times with deionized water,...

Embodiment 2

[0023] ①In a 50mL quartz Erlenmeyer flask, dissolve 0.2g of anhydrous copper sulfate in 26mL of deionized water, and add disodium edetate at a molar ratio of 1:1.2 to obtain divalent copper ions and ethylenediaminetetra Complexes of disodium acetate—aqueous solution of ethylenediaminetetraacetic acid and copper complex anion.

[0024] ② Dissolve 0.05 mol of anhydrous sodium sulfite in 100 mL of deionized water, then add 0.02 mol of selenium powder, and reflux for 5 hours to obtain a 0.2 M aqueous sodium selenosulfate solution.

[0025] ③ Measure 3 mL of the sodium selenosulfate aqueous solution prepared in step ② and add it to the aqueous solution of ethylenediaminetetraacetic acid copper complex anion prepared in step ①, pass nitrogen gas for 20 minutes, and then place the Erlenmeyer flask in a 250W high-pressure mercury lamp Irradiate at a distance of 20 cm for 4 hours, and use cooling water to keep the reaction system at room temperature. The obtained product was centrifug...

Embodiment 3

[0027] ①In a 50mL quartz Erlenmeyer flask, dissolve 0.2g copper chloride in 26mL deionized water, add disodium edetate at a molar ratio of 1:1.5 to obtain divalent copper ions and edetate Disodium complexes - ethylenediaminetetraacetic acid copper complex anion aqueous solution.

[0028] ② Dissolve 0.06 mol of anhydrous sodium sulfite in 100 mL of deionized water, then add 0.02 mol of selenium powder, and reflux for 4 hours to obtain a 0.2 M aqueous sodium selenosulfate solution.

[0029] ③ Measure 4 mL of the sodium selenosulfate aqueous solution prepared in step ② and add it to the aqueous solution of ethylenediaminetetraacetic acid copper complex anion prepared in step ①, pass nitrogen gas for 30 minutes, and then place the Erlenmeyer flask in a 250W high-pressure mercury lamp Irradiate at a distance of 20 cm for 8 hours, and use cooling water to keep the reaction system at room temperature. The obtained product was centrifuged, washed three times with deionized water, and...

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Abstract

THe preparation method of nano copper selenide includes the following steps: firstly, preparing coordination compound of cupric ion and disodium ethylene diamine tetracetate-complexonocopper complex anion aqueous solution and aqueous solution of sodium selenosulfate, then mixing said obtained two aqueou s solutions in quartz conical flask, introducing nitrogen gas and exhausting air completely, using high-voltage mercury vapour lamp to make irradiation, using cooling water to retain and make the temp. of reaction system be room temp. and irradiating for 4-8 hr so as to obtain nano copper selenide with cubic structure and average grain size of 70-90 nm.

Description

Technical field: [0001] The invention relates to a preparation method of nano copper selenide, in particular to the preparation of nano copper selenide by photochemical method. Background technique: [0002] Nano-powder has many unique physical and chemical properties due to its size effect, which has attracted people's attention. Nano-copper selenide has become one of the research hotspots in academia because it can be widely used in solar cells, superionic conductors and other fields. In recent years, there have been many reports on the preparation methods of nano-copper selenide. These methods mainly focus on the preparation of nano copper selenide by sonochemical method, microwave assisted heating method, hydrothermal method and solvothermal method. In these methods, ultrasonic radiation, microwave radiation and hydrothermal method, high temperature in solvothermal method High pressure provides the necessary negative divalent selenium ions for the generation of nano-co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/04C01G3/00
Inventor 阎玉林钱雪峰朱子康
Owner SHANGHAI JIAO TONG UNIV
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