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Method for preparing cuprous oxide microcrystals by taking carbon quantum dots as reducing agent

A carbon quantum dot, cuprous oxide technology, applied in copper oxide/copper hydroxide and other directions, can solve the problem of high purity

Inactive Publication Date: 2015-04-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, no one has been found to use carbon quantum dots prepared from green grass as a reducing agent to prepare cuprous oxide by hydrothermal reduction. The cuprous oxide prepared by this method is micron-sized and has a uniform size distribution and high purity.

Method used

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  • Method for preparing cuprous oxide microcrystals by taking carbon quantum dots as reducing agent
  • Method for preparing cuprous oxide microcrystals by taking carbon quantum dots as reducing agent
  • Method for preparing cuprous oxide microcrystals by taking carbon quantum dots as reducing agent

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Example 1 Preparation of carbon quantum dots

[0022] The preparation of carbon quantum dots adopts the hydrothermal synthesis method: weigh 4 g of green grass in a 50 mL polytetrafluoroethylene reactor, then add 20 mL of distilled water, and then place it at 180 o C was kept in a drying oven for 4 h, and the reaction kettle was taken out to cool down to room temperature naturally, and the solid impurities were filtered out to obtain a carbon quantum dot solution.

Embodiment 2

[0023] Example 2 Preparation of graded spherical cuprous oxide

[0024] 255 mg of Cu(NO 3 ) 3H 2 Dissolve O in 10 mL of distilled water, then add 10 mL of NaOH solution (1 mol / L), add 600 mg of polyethylene glycol 2000 and 8 mL of carbon quantum solution prepared after the dropwise addition, and mix the solution at 1500 r / min Stir for 10 min, then transfer to a 50 mL polytetrafluoroethylene reactor, put in an oven, 180 o C for 8 h, take out the reactor and cool to room temperature naturally; wash the obtained samples with deionized water and absolute ethanol for 3 times, centrifuge and place in a vacuum oven for 60 o C drying for 8 h.

Embodiment 3

[0025] Example 3 Preparation of spherical cuprous oxide

[0026] 255 mg of CuCl 2 2H 2 Dissolve O in 10 mL of distilled water, then add 20 mL of NaOH solution (1 mol / L), add 800 mg of polyethylene glycol 2000 and 8 mL of carbon quantum solution prepared after the dropwise addition, and mix the solution at 100 r / min Stir for 150 min, then transfer to a 50 mL polytetrafluoroethylene reactor, put in an oven, 200 o C for 6 h, take out the reactor and cool to room temperature naturally; wash the obtained samples with deionized water and absolute ethanol for 3 times, centrifuge and place in a vacuum oven for 60 o C drying for 8 h.

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Abstract

The invention relates to cuprous oxide and provides a method for synthesizing cuprous oxide microcrystals with special appearance by taking carbon quantum dots as a reducing agent. The carbon quantum dots are prepared from grass as a raw material through a hydrothermal method. According to the synthesis of cuprous oxide, the carbon quantum dots are taken as the reducing agent, a copper salt is taken as a copper source, and in the presence of a surfactant and a NaOH solution, the cuprous oxide microcrystals with local special appearance are obtained by reaction through a hydrothermal method, then water washing, alcohol washing and centrifugal drying. Cuprous oxide prepared by the method is in micrometer size, the size and appearance distribution is uniform, and the purity is high.

Description

technical field [0001] The invention relates to a method for preparing cuprous oxide microcrystals by using carbon quantum dots as a reducing agent; the preparation process is simple, the raw materials are environmentally friendly, cheap and easy to obtain, and the product has high purity. technical background [0002] As an important P-type metal oxide semiconductor material, cuprous oxide has potential value in photoelectric conversion, gas sensing, photocatalysis and other fields, and has attracted extensive attention from scholars at home and abroad; There is an important relationship between the properties of the cuprous oxide and its morphology and particle size; It is significantly lower than the octahedral cuprous oxide with exposed (111) crystal faces. Cao et al. found that the photocatalytic activity of cubic cuprous oxide increases with the decrease of its particle size (Materials Letters, 2014, 114, 88) ; Since the shape of cuprous oxide has an important influen...

Claims

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Application Information

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IPC IPC(8): C01G3/02
CPCC01G3/02C01P2002/72C01P2004/03
Inventor 陈琳琳陈敏邢潮胜姜德立
Owner JIANGSU UNIV
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