Preparation method of sphere-like and bookmark-shaped cuprous oxide nano-particles

A nano-cuprous oxide and nano-particle technology, which is applied in the direction of copper oxide/copper hydroxide, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problem of difficult to prepare small particle products, increase adsorption and photocatalytic degradation ability, increase the surface area, etc., to achieve good photocatalytic performance and gas sensing characteristics, short reaction time, and low reaction temperature

Inactive Publication Date: 2015-04-01
CHINA UNIV OF MINING & TECH
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  • Description
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Problems solved by technology

[0005] Technical problem: the purpose of this invention is to provide a kind of preparation method of spherical and bookmark-shaped nano cuprous oxide particles with simple process, which solves the problem that cuprous oxide is difficult to prepare dozens of nanoscale small particle products, and increases the surface area, which increases its adsorption and photocatalytic degradation capacity

Method used

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  • Preparation method of sphere-like and bookmark-shaped cuprous oxide nano-particles
  • Preparation method of sphere-like and bookmark-shaped cuprous oxide nano-particles
  • Preparation method of sphere-like and bookmark-shaped cuprous oxide nano-particles

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Embodiment 1

[0030] Embodiment 1: The raw materials and combinations thereof for preparing the nano-cuprous oxide particles are prepared as follows: copper acetate: 0.4g ± 0.001g, N-N dimethylformamide (DMF): 60ml ± 0.5mL, polyvinylpyrrolidone (PVP) : 0.165g±0.001g, sodium borohydride: 0.04g±0.001g;

[0031] The concrete steps of preparation method are:

[0032] (1) Dissolve 0.4g copper acetate into 60ml N-N dimethylformamide;

[0033] (2) Add 0.165g of PVP (molecular weight: 50,000) into the above solution and stir vigorously;

[0034] (3) Then add 0.04g of sodium borohydride to the above solution, react in a water bath at 80°C for 25 minutes, and in an oil bath at 120°C for 22 minutes, orange or yellow particles appear, indicating Cu 2 O generate;

[0035] (4) will contain Cu 2 The solid-liquid two-phase of O was centrifuged at high speed to obtain Cu 2 O solid particles, then cross-wash Cu with absolute alcohol and deionized water 2 O particles several times to remove other impuri...

Embodiment 2

[0041] (1) Dissolve 0.4g copper acetate into 60ml N-N dimethylformamide;

[0042] (2) Add 0.165g of PVP (molecular weight: 50,000) into the above solution and stir vigorously;

[0043] (3) Then add 0.04g of sodium borohydride to the above solution, react in a water bath at 80°C for 25 minutes, and in an oil bath at 120°C for 22 minutes, orange or yellow particles appear, indicating Cu 2 O generate;

[0044] (4) will contain Cu 2 The solid-liquid two-phase of O was centrifuged at high speed to obtain Cu 2 O solid particles, then cross-wash Cu with absolute alcohol and deionized water 2 O particles several times to remove other impurities in the reaction process;

[0045] (5) Wet Cu 2 O is placed in a vacuum drying oven and dried under vacuum at 60°C for 4 hours to obtain high-purity Cu 2 O-type spherical nanoparticles.

[0046] Others are the same as in Example 1.

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Abstract

The invention discloses a preparation method of sphere-like and bookmark-shaped cuprous oxide nano-particles, and belongs to a preparation method of cuprous oxide particles. The method comprises steps as follows: copper acetate is adopted as a raw material, N, N-dimethylformamide is adopted as a solvent, polyvinylpyrrolidone is adopted as a dispersing agent, sodium borohydride is adopted as a reducing agent, cuprous oxide nano-particles with different shapes are prepared at different temperatures, and cuprous oxide is rapidly prepared through centrifugal separation and vacuum drying. The preparation method has the advantages that the cost is low, the preparation technology is simple, the method is environment-friendly, the purity is high and the granularity is in nanoscale; the mean grain size of each sphere-like nano-particle is about 25 nm, the mean grain size of each bookmark-shaped nano-particle is about 55 nm, the surface chemical activity is high, and the product has excellent photocatalytic performance and gas sensing property and has potential application value in the fields of catalytic degradation of organic dyestuff, a gas sensor and the like.

Description

technical field [0001] The invention relates to a method for preparing cuprous oxide particles, in particular to a method for preparing spherical and bookmark-shaped nano cuprous oxide particles. Background technique [0002] Cuprous oxide is a typical P-type semiconductor, which can be used in solar energy conversion, magnetic storage, catalysis, gas sensing and other fields. After the size reaches the nanoscale, it has many potential applications in solar cells, gas catalysis, and gas sensors due to its large specific surface area and excellent surface physical and chemical properties. Cu 2 The most obvious advantage of O as a photocatalyst is that it can directly use visible light to decompose water into hydrogen and oxygen. 2 Next-generation semiconductor photocatalysts. And based on Cu 2 Gas sensors made of O nanoparticles have high sensitivity and good selectivity to toxic and flammable gases, and have been widely used in the detection of ethanol, H 2 S. NO 2 Wai...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y30/00B82Y40/00
CPCB82Y40/00C01G3/02C01P2002/72C01P2004/03C01P2004/04C01P2004/64
Inventor 吴玲张伦王洁如陈善亮
Owner CHINA UNIV OF MINING & TECH
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