Preparation method of polycrystalline nano cuprous oxide particles

A nano cuprous oxide and particle technology, applied in the field of nano materials, can solve the problems of affecting the purity of the final product, long reaction time, affecting the product, etc., and achieve the effects of shortening preparation time, short reaction time and low cost.

Active Publication Date: 2020-06-16
SOUTHWEST FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the concentration of surfactants often directly affects the final shape of the product. The concentration of surfactants needs to be precisely regulated in the preparation process, which not only brings a lot of trouble to industrial production, but also affects the purity of the final product.
[0006] Third, the cuprous oxide obtained in the prior art is mostly single crystal cuprous oxide particles
[0007] Fourth, the reaction time of the prior art usually ranges from 1 to 8 hours, which has the problems of long reaction time and high energy consumption

Method used

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  • Preparation method of polycrystalline nano cuprous oxide particles
  • Preparation method of polycrystalline nano cuprous oxide particles
  • Preparation method of polycrystalline nano cuprous oxide particles

Examples

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Embodiment 1

[0044] Take 60ml of 98% ethylene glycol and put it in a 300mL beaker, weigh 13.8mmol of copper acetate and add it to the ethylene glycol solution, and stir it magnetically for 30 minutes. After the copper acetate is completely dissolved, the ethylene glycol solution of copper acetate is obtained. Dissolve 18g of glucose in 100ml of deionized water to prepare a 0.18g / ml glucose solution. Take 5ml of glucose solution and slowly add it dropwise to the ethylene glycol solution of copper acetate, continue to stir until the solution is uniform, transfer the mixed solution to a polytetrafluoroethylene reaction liner, place it in an inverter microwave oven, set the power to 400W, and react for 10 minutes Afterwards the mixture turned dark red, indicating the formation of cuprous oxide. The reaction product was centrifugally filtered, washed 3-5 times with absolute ethanol and deionized water, and finally the washed sample was dried in a vacuum oven at 55°C for 3 hours to obtain nano-C...

Embodiment 2

[0046] Take 60ml of 98% ethylene glycol and put it in a 300mL beaker, weigh 10.8mmol of copper acetate and add it to the glycerol solution, and stir it magnetically for 30min. After the copper acetate is completely dissolved, a glycerol solution of copper acetate is obtained. Dissolve 16g of glucose in 100ml of deionized water to prepare a 0.16g / ml glucose solution. Take 5ml of glucose solution and slowly add it dropwise to the glycerol solution of copper acetate, continue to stir until the solution is uniform, transfer the mixed solution to a polytetrafluoroethylene reaction liner, place it in an inverter microwave oven, set the power to 500W, and react for 9 minutes Afterwards the mixture turned dark red, indicating the formation of cuprous oxide. The reaction product was centrifugally filtered, washed 3-5 times with absolute ethanol and deionized water, and finally the washed sample was dried in a vacuum oven at 58°C for 3 hours to obtain nano-Cu 2 O polycrystalline powder...

Embodiment 3

[0048] Take 60ml of 98% copper nitrate and put it in a 300mL beaker, weigh 7.41mmol of copper nitrate and add it to the triethanolamine solution, stir magnetically for 30min, and after the copper acetate is completely dissolved, a triethanolamine solution of copper nitrate is obtained. Dissolve 15g of glucose in 100ml of deionized water to prepare a 0.15g / ml glucose solution. Take 5ml of glucose solution and slowly add it dropwise to the triethanolamine solution of copper nitrate, continue to stir until the solution is uniform, then transfer the mixed solution to a polytetrafluoroethylene reaction liner, place it in an inverter microwave oven, set the power to 600W, and react for 8 minutes The mixture turned dark red, indicating the formation of cuprous oxide. The reaction product was centrifugally filtered, washed with absolute ethanol and deionized water for 3-5 times, and finally the washed sample was dried in a vacuum oven at 60°C for 3 hours to obtain nano-Cu 2 O polycry...

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Abstract

The invention discloses a preparation method of polycrystalline nano cuprous oxide particles, which comprises the following steps: adding a copper source into a 98% polyol solution, and completely dissolving the copper source to obtain a precursor solution; dissolving sodium citrate or glucose in deionized water to prepare a solution, slowly adding the prepared solution into the prepared precursorsolution, and fully stirring until the solutions are uniformly mixed; transferring the prepared mixed solution into a polytetrafluoroethylene reaction liner tube, and putting the polytetrafluoroethylene reaction liner tube into a variable-frequency microwave oven; and centrifugally filtering the reaction product, washing with absolute ethyl alcohol and deionized water, and finally putting the washed sample into a vacuum drying oven to obtain the nano cuprous oxide polycrystalline powder. The method is simple in process, easy and convenient to operate, short in reaction time, low in cost consumption and environmentally friendly in raw materials, and the prepared cuprous oxide nanoparticles are of a polycrystalline structure, narrow in particle size distribution and good in stability.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and relates to a method for preparing polycrystalline nanometer cuprous oxide particles. Background technique [0002] As an important p-type semiconductor material, cuprous oxide has a bandgap energy of 2.0-2.2ev. The absorption coefficient in the visible light region is relatively high, and the energy conversion rate can theoretically reach 12%. In recent years, cuprous oxide has been considered as a green and environmentally friendly material with great development prospects because of its unique optical and electrical properties, non-toxicity, and low preparation cost. It is increasingly used in photocatalysis, solar cells, sensors, etc. , lithium-ion batteries and magnetic storage have shown broad application prospects. At present, there have been many studies on Cu 2 Research on the preparation of nanometer materials, cuprous oxide with different shapes such as nanospheres, n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02B82Y30/00B82Y40/00
CPCC01G3/02B82Y30/00B82Y40/00C01P2002/72C01P2004/03C01P2004/04C01P2004/64
Inventor 柴希娟解林坤康昆勇李伟超李琛
Owner SOUTHWEST FORESTRY UNIVERSITY
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