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Preparation method of shape-controllable nano CuO (copper oxide) powder

A nano-copper oxide and powder technology is applied in the field of materials to achieve the effects of good application prospects, good sensing and energy storage characteristics, and low cost

Active Publication Date: 2015-07-29
扬州爱科新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The literature search shows that there are no literature reports at home and abroad about the research results of preparing CuO nanomaterials with hydrogen peroxide as the oxidant and cuprous oxide as the template.

Method used

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  • Preparation method of shape-controllable nano CuO (copper oxide) powder
  • Preparation method of shape-controllable nano CuO (copper oxide) powder
  • Preparation method of shape-controllable nano CuO (copper oxide) powder

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Experimental program
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Effect test

Embodiment 1

[0026] 1) Add 28.8mg of Cu with an average particle size of about 40nm 2 O powder was added to 24 mL deionized water (Cu 2 The mass ratio of O powder to deionized water is 1:833), using a magnetic stirrer to stir for 5min at a speed of 400rpm / min at 25°C to obtain a suspension;

[0027] 2) 1 mL of 1% hydrogen peroxide (H 2 o 2 ) solution was added to the suspension, stirred and reacted at 25°C at a speed of 400rpm / min for 20h to obtain the primary product of CuO; the volume ratio of the added hydrogen peroxide solution to the water in the suspension was 1:24.

[0028] 3) The CuO primary product was centrifuged and washed 5 times with deionized water and absolute ethanol repeatedly, each time for 2 minutes, the centrifugal speed was 8000rpm / min, and finally placed in a vacuum drying oven and dried at a temperature of 50°C and a pressure of 120Pa After 12 hours, nano-copper oxide powder was obtained.

[0029] The morphology of the nanometer copper oxide powder that embodimen...

Embodiment 2

[0031] 1) Add 85mg of Cu with an average particle size of about 100nm 2 O powder was added to 60mL deionized water (Cu 2 O powder and deionized water mass ratio is 1:706), utilize magnetic stirrer to stir 5min with the speed of 400rpm / min at 25 ℃, obtain suspension;

[0032] 2) 40mL mass fraction of 5% hydrogen peroxide (H 2 o 2 ) solution was added to the suspension, stirred and reacted at 25°C at a speed of 400rpm / min for 25h to obtain the CuO primary product; the volume ratio of the added hydrogen peroxide solution to the water in the suspension was 1:1.5.

[0033] 3) The CuO primary product was centrifuged and washed 5 times with deionized water and absolute ethanol repeatedly, each time for 2 minutes, the centrifugal speed was 8000rpm / min, and finally placed in a vacuum drying oven and dried at a temperature of 50°C and a pressure of 120Pa After 12 hours, nano-copper oxide powder was obtained.

[0034] The appearance of the nano-copper oxide powder that embodiment 2 o...

Embodiment 3

[0037] 1) Add 28.8 mg of Cu with an average particle size of about 80 nm 2 O powder was added to 24 mL deionized water (Cu 2 The mass ratio of O powder to deionized water is 1:833), using a magnetic stirrer to stir for 5min at a speed of 400rpm / min at 25°C to obtain a suspension;

[0038] 2) 1 mL of 5% hydrogen peroxide (H 2 o 2 ) solution was added to the suspension, stirred and reacted at 25°C at a speed of 400rpm / min for 28h to obtain the primary product of CuO; the volume ratio of the added hydrogen peroxide solution to the water in the suspension was 1:24.

[0039] 3) The CuO primary product was centrifuged and washed 5 times with deionized water and absolute ethanol repeatedly, each time for 3 minutes, and the centrifugal speed was 8000rpm / min, and finally placed in a vacuum drying oven and dried at a temperature of 50°C and a pressure of 120Pa After 12 hours, nano-copper oxide powder was obtained.

[0040] The appearance of the nano-copper oxide powder that embodime...

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Abstract

The invention discloses a preparation method of shape-controllable nano CuO (copper oxide) powder. The method comprises steps as follows: Cu2O powder is added to water, the mixture is evenly stirred, and a suspension is obtained; a hydrogen peroxide solution with the mass fraction ranging from 0.5% to 30% is added to the suspension for a reaction at the temperature of 15-85 DEG C for 5 min-36 h, and a CuO primary product is obtained; the shape-controllable nano CuO powder with different shapes is obtained through centrifugal washing and drying. The method is simple in technology and low in cost, the high-purity nano CuO powder can be synthesized, the shape-controllable nano CuO powder can be obtained through adjustment of the stirring temperature, the reaction time as well as the concentration and the addition amount of the hydrogen peroxide solution, the method is suitable for large-scale industrial production, and the obtained nano CuO powder has good sensing and energy storage properties and has the bright application prospect.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a preparation method of nanomaterials, in particular to a preparation method of nano copper oxide powder with controllable morphology. Background technique [0002] Copper oxide (CuO) is an indirect bandgap p-type semiconductor material with a bandgap of 1.2eV. Because of its excellent electrochemical and catalytic activity, CuO nanomaterials are used in non-enzymatic glucose sensing, supercapacitors, lithium-ion batteries, The fields of gas sensing and catalytic degradation of organic matter have shown excellent performance and great application potential. Many properties of nanomaterials are closely related to their own structure, composition, particle size and surface morphology and other factors. It has become a current research hotspot to realize the regulation and control of its properties through the regulation of the morphology and structure of nano-CuO. The morphologies of CuO c...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y30/00
Inventor 孔春才杨志懋杨生春宋晓平
Owner 扬州爱科新材料科技有限公司
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