Preparation method of nano cuprous oxide

A nano-cuprous oxide and mixed solution technology, applied in copper oxide/copper hydroxide and other directions, can solve the problems of poor reproducibility and effective control of crystal morphology, and achieve the effects of simple method, narrow particle size distribution and mild conditions.

Inactive Publication Date: 2020-01-17
CHONGQING UNIV OF ARTS & SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to effectively control the crystal morphology in the industrial preparation of cuprous oxide, and the reproducibility is poor. Therefore, a simple and controllable method for the preparation of cuprous oxide crystals is developed, so that the synthesis of specific morphology and the nano-oxidation of exposed highly active crystal faces Cuprous research is of great significance

Method used

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  • Preparation method of nano cuprous oxide
  • Preparation method of nano cuprous oxide
  • Preparation method of nano cuprous oxide

Examples

Experimental program
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Embodiment 1

[0028] A preparation method of nano-cuprous oxide, characterized in that, proceed as follows:

[0029] (1) Under magnetic stirring, in 40mL of 0.5mol / L CuSO 4 Add 80mL of 1.5mol / L NaOH aqueous solution to the aqueous solution, and then continue magnetic stirring for 30min to prepare the mixed solution A;

[0030] (2) Take 100mL of 0.25mol / L ascorbic acid, 2mL of oleic acid, and 1.06g of PVP k30, mix and stir for 30min, and prepare the mixture B;

[0031] (3) Add the mixed solution B to the mixed solution A drop by drop, and then stir for 35 minutes. The volume ratio of the mixed solution A to the mixed solution B is 1.1:0.9;

[0032] (4) Centrifuge to filter out the red precipitate formed by the reaction, wash with absolute ethanol and deionized water successively, and dry at 60°C for 8 hours.

[0033] XRD detection conditions of cuprous oxide:

[0034] The radiation source is a Cu target, the wavelength is 1.54060 m, the scanning angle is 20°-80°, the voltage is 30 kV, the...

Embodiment 2

[0038] A preparation method of nano-cuprous oxide, characterized in that, proceed as follows:

[0039] (1) Under magnetic stirring, in 50mL of 0.5mol / L CuSO 4 Add 100mL of 1.5mol / L NaOH aqueous solution to the aqueous solution, and then continue magnetic stirring for 30min to prepare the mixed solution A;

[0040] (2) Take 120mL of 0.25mol / L ascorbic acid, 2.4mL of oleic acid, and 1.27g of PVP k30, mix and stir for 35min, and prepare the mixture B;

[0041] (3) Add the mixed solution B to the mixed solution A drop by drop, and then stir for 30 minutes. The volume ratio of the mixed solution B to the mixed solution A is 1.2:1;

[0042] (4) The red precipitate generated by the reaction was filtered by centrifugation, washed with absolute ethanol and deionized water in turn, and then dried at 60°C for 8 hours.

[0043] The nanometer cuprous oxide that present embodiment 1 prepares is as figure 2As shown, they are all octahedral structures with chamfered corners and chamfered ...

Embodiment 3

[0045] A preparation method of nano-cuprous oxide, characterized in that, proceed as follows:

[0046] (1) Under magnetic stirring, in 60mL of 0.5mol / L CuSO 4 Add 120mL of 1.5mol / L NaOH aqueous solution to the aqueous solution, and then continue magnetic stirring for 20min to prepare the mixed solution A;

[0047] (2) Take 150mL of 0.25mol / L ascorbic acid, 3mL of oleic acid, and 1.59g of PVP k30, mix and stir for 40min, and prepare the mixture B;

[0048] (3) Add the mixed solution B to the mixed solution A drop by drop, and then stir for 40 minutes. The volume ratio of the mixed solution B to the mixed solution A is 1.15:0.95;

[0049] (4) The red precipitate generated by the reaction was filtered by centrifugation, washed with absolute ethanol and deionized water in turn, and then dried at 60°C for 8 hours.

[0050] The nano-cuprous oxide prepared in Example 3 has a regular appearance and an octahedral structure with chamfered corners and chamfered edges, and its particle ...

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Abstract

The invention discloses a preparation method of nano cuprous oxide. The preparation method is invented based on a liquid phase reduction method, and is characterized by comprising the following steps:mixing CuSO4 and NaOH to prepare a mixed solution A, preparing a mixed solution B from oleic acid, PVP and ascorbic acid, dropwise adding the mixed solution B into the mixed solution A, mixing, stirring for reaction, centrifugally filtering, washing and drying. The prepared nano cuprous oxide is regular and controllable in morphology, is of a chamfered and chamfered octahedral structure, is goodin reproducibility, and is small in particle size and controllable in size, and the particle size ranges from 100 nm to 200 nm; the nano cuprous oxide prepared by the method is high in crystal face index and has excellent photocatalytic performance.

Description

technical field [0001] The invention relates to the technical field of nano-oxide preparation, in particular to a method for preparing nano-cuprous oxide. Background technique [0002] Cuprous oxide is an important P-type semiconductor. Its direct band gap is 2.17eV. After the size reaches the nanometer level, it has a good application in solar cells, photocatalysis, sensors and other fields due to its good surface physical and chemical properties. application prospects. Cuprous oxide crystals have many shapes and are easily dissolved and removed in acidic or alkaline environments. They are often used as templates for the synthesis of nanoparticles with specific shapes. The obvious advantage of cuprous oxide as a photocatalyst is that it can directly use sunlight to catalyze the degradation of organic pollutants. Based on the antibacterial properties of copper series, the antibacterial properties of cuprous oxide are gradually being explored and used by people. [0003] A ...

Claims

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Application Information

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IPC IPC(8): C01G3/02
CPCC01G3/02C01P2002/72C01P2004/03C01P2004/62
Inventor 曹仕秀徐静韩涛王金玉曹仰飞杨佳垚赵茂宇
Owner CHONGQING UNIV OF ARTS & SCI
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