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Preparation method of copper germanate quantum dots

A technology of quantum dots and copper germanate, which is applied in the field of preparation of copper germanate materials, can solve problems such as harsh reaction conditions, and achieve the effects of easy availability of raw materials, simple operation process and low price.

Inactive Publication Date: 2014-07-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has harsh reaction conditions and certain requirements for equipment, and the particle size of the prepared material generally reaches the micron level.

Method used

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  • Preparation method of copper germanate quantum dots
  • Preparation method of copper germanate quantum dots
  • Preparation method of copper germanate quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 10mL0.01M CuCl to 15mLTX-100, 25mL cyclohexane, 8mL ethanol 2 In the aqueous solution, after stirring until it forms a transparent and clear microemulsion, slowly add 5mL NaGeO 3 Aqueous solution, heated to 60°C, refluxed for 8h, after the reaction was completed, 30ml of ethanol was added to break the emulsification, centrifuged and washed to obtain CuGeO 3 quantum dots. NaGeO 3 The solution was prepared as follows: 2 mmol NaOH was dissolved in 5 ml deionized water, and 1 mmol GeO was added 2 , sonicated to form a transparent and clear solution, and the volume was adjusted to 50mL.

Embodiment 2

[0023] Add 10mL0.01M CuCl to 15mLTX-100, 25mL cyclohexane, 8mL ethanol 2 In the aqueous solution, after stirring until it forms a transparent and clear microemulsion, slowly add 5mL NaGeO 3 Aqueous solution, heated to 80°C, refluxed for 6h, after the reaction was completed, 40ml of ethanol was added to break the emulsification, centrifuged and washed to obtain CuGeO 3 quantum dots. NaGeO 3 The solution was prepared as follows: 2 mmol NaOH was dissolved in 2 ml deionized water, and 1 mmol GeO was added 2 , sonicated to form a transparent and clear solution, and the volume was adjusted to 50mL.

Embodiment 3

[0025] Add 10mL0.01M CuCl to 15mLTX-100, 25mL cyclohexane, 8mL ethanol 2 In the aqueous solution, after stirring until it forms a transparent and clear microemulsion, slowly add 5mL NaGeO 3 Aqueous solution, heated to 60°C, refluxed for 7 hours, after the reaction was completed, 40ml of ethanol was added to break the emulsification, and centrifuged to obtain CuGeO 3 quantum dots. The preparation method of NaGeO3 solution is as follows: 2mmol NaOH is dissolved in 2ml deionized water, and 1mmolGeO 2 , sonicated to form a transparent and clear solution, and the volume was adjusted to 50mL.

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Abstract

The invention relates to a preparation method of copper germanate quantum dots. The preparation method comprises the following steps: adding a surfactant, cyclonexane and a naGeO3 cosurfactant into a CuCl2 aqueous solution; stirring to form a transparent clear microemulsion; slowly adding a naGeO3 aqueous solution into the microemulsion; heating to 60-80 DEG C; carrying out backflow for 6-8h; after the reaction is completed, adding a deemulsifier to carry out deemulsification; and carrying out centrifugal washing on the obtained product so as to obtain CuGeO3 quantum dots. According to the method disclosed by the invention, cupric sulfide nanocrystallines are prepared from common precursors serving as raw materials by using simple experimental facilities; and the reaction has the advantages that raw materials are easily available and low in price, the operation process is simple and convenient, reaction conditions are mild, and the reaction has no special demands on devices are.

Description

technical field [0001] The invention belongs to the field of preparation of copper germanate materials, in particular to a preparation method of copper germanate quantum dots. Background technique [0002] Copper germanate (CuGeO 3 ) nanostructures have attracted great attention due to their excellent magnetic, optical, electrochemical properties and spin-Pells phase transitions. Currently CuGeO 3 The preparation method is mainly hydrothermal / solvothermal method. This method uses water or non-aqueous solvent as the reaction medium in a special closed reactor. By heating the reactor, a high temperature and high pressure reaction environment is created, which makes it difficult to Dissolution and recrystallization of soluble or insoluble substances for inorganic synthesis and material processing. However, this method has harsh reaction conditions and certain requirements for equipment, and the particle size of the prepared material generally reaches the micron level. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G17/00
Inventor 胡俊青李博邹儒佳董旭
Owner DONGHUA UNIV