Preparation of polyhedral cuprous oxide nano particle

A nanoparticle, cuprous oxide technology, applied in copper oxide/copper hydroxide and other directions, can solve problems such as unfavorable large-scale production, difficult synthesis control, complex conditions, etc., and achieve the effects of low cost, easy synthesis method, and simple operation.

Inactive Publication Date: 2009-01-21
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because they are all prepared by electrochemical methods, the substrate needs to be pre-treated, and can only be grown on the substrate, making the conditions more complicated, the synthesis difficult to control, and the cost high, which is not conducive to large-scale production.
However, using a simple chemical solution method to synthesize a series of polyhedral cuprous oxide nanoparticles with uniform size and shape in one step has not been reported at home and abroad.

Method used

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  • Preparation of polyhedral cuprous oxide nano particle
  • Preparation of polyhedral cuprous oxide nano particle
  • Preparation of polyhedral cuprous oxide nano particle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] ① Preparation of strong alkali aqueous solution: Dissolve 1.2g of sodium hydroxide in 10ml of water, stir at room temperature to fully dissolve the sodium hydroxide in the water to obtain an aqueous solution of sodium hydroxide, the concentration of the aqueous solution of sodium hydroxide is 3.0mol / l.

[0033] ②Preparation of ascorbic acid aqueous solution: Dissolve 1.057g of ascorbic acid in 10ml of water, stir at room temperature to fully dissolve ascorbic acid in the water to obtain an aqueous solution of ascorbic acid, the concentration of the aqueous solution of ascorbic acid is 0.6mol / l.

[0034] 3. preparation of copper salt aqueous solution: in a 250ml flask, 0.171g cupric chloride is dissolved in 100ml water, and stirring at room temperature makes cupric chloride fully dissolve in water, obtains the aqueous solution of cupric chloride, the concentration of cupric chloride aqueous solution is 10×10 -3 mol / l.

[0035] ④Add 0.011g of polyvinylpyrrolidone to the ...

Embodiment 2

[0037] ①Dissolve 0.4g of sodium hydroxide in 10ml of water, stir at room temperature to fully dissolve the sodium hydroxide in the water to obtain an aqueous solution of sodium hydroxide, the concentration of the aqueous solution of sodium hydroxide is 1.0mol / l.

[0038] ②Dissolve 0.528g of ascorbic acid in 10ml of water, stir at room temperature to fully dissolve ascorbic acid in water to obtain an aqueous solution of ascorbic acid, the concentration of which is 0.3mol / l.

[0039] ③In a 250ml flask, dissolve 0.20g of copper sulfate in 100ml of water, stir at room temperature to fully dissolve the copper sulfate in the water, and obtain an aqueous solution of copper sulfate, the concentration of which is 8×10 -3 mol / l.

[0040]④Add 0.556g of polyvinylpyrrolidone to the flask, stir evenly at 55°C, add 10ml of the sodium hydroxide aqueous solution in ① dropwise, and continue stirring for 0.5h, then add 10ml of the ascorbic acid aqueous solution in ② dropwise, at 55°C Then stir ...

Embodiment 3

[0042] ①Dissolve 1.6g of sodium hydroxide in 10ml of water, stir at room temperature to fully dissolve the sodium hydroxide in the water to obtain an aqueous solution of sodium hydroxide, the concentration of the aqueous solution of sodium hydroxide is 4.0mol / l.

[0043] ②Dissolve 1.233g of ascorbic acid in 10ml of water, stir at room temperature to fully dissolve ascorbic acid in water to obtain an aqueous solution of ascorbic acid, the concentration of which is 0.7mol / l.

[0044] ③In a 250ml flask, dissolve 0.239g of copper acetate in 100ml of water, stir at room temperature to fully dissolve the copper acetate in the water, and obtain an aqueous solution of copper acetate, the concentration of which is 12×10 -3 mol / l.

[0045] ④Add 1.111g of polyvinylpyrrolidone to the flask, stir evenly at 55°C, add 10ml of the sodium hydroxide aqueous solution in ① dropwise, and continue stirring for 0.5h, then add 10ml of the ascorbic acid aqueous solution in ② dropwise, at 55°C Then st...

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Abstract

The invention provides a method for preparing polyhedral cuprous oxide nanometer granules. The method adopts a chemical solution method to prepare polyhedral cuprous oxide nanometer granules comprising cubes, chamfered cubes, cubic octahedrons, chamfered octahedrons or octahedral series. The method comprises the following concrete steps: copper salt is dissolved in water and stirred at a temperature between 50 and 60 DEG C; polyvinyl pyrrolidone, strong base solution and ascorbic acid solution are orderly added, stirred at a constant temperature between 50 and 60 DEG C and kept for 1 to 3 hours; after the reaction is over, the centrifugation is carried out; and a large amount of the deionized water is used for washing, and the cuprous oxide nanometer granules can be obtained after vacuum drying. By regulating the adding amount of the polyvinyl pyrrolidone, the polyhedral cuprous oxide nanometer granules comprising the cubes, the chamfered cubes, the cubic octahedrons, the chamfered octahedrons or the octahedral series are obtained. The method has the advantages of moderate condition, simple operation, low cost, high yield, controllable shape, and so on.

Description

technical field [0001] The invention relates to a method for preparing polyhedral cuprous oxide nanoparticles, in particular to a method for preparing cuprous oxide nanoparticles including cubes, chamfered cubes, cube-octahedrons, chamfered octahedrons, and octahedral series by using a chemical solution method . The invention belongs to the technical field of preparation of inorganic compound semiconductor materials. Background technique [0002] Due to the particularity of its structure, such as large specific surface area and a series of new effects (small size effect, interface effect, quantum effect and quantum tunneling effect, etc.), nanomaterials have unique physical and chemical properties that have attracted people's attention. Pay attention to. Cuprous oxide is a good P-type semiconductor, which can be used in solar energy conversion, microelectronics, magnetic storage, catalysis, gas sensing and other fields. After the size reaches the nanoscale, because of its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02
Inventor 郭林张华张东凤
Owner BEIHANG UNIV
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