Preparation method of copper oxide with nano flower-like structure

A technology of copper oxide and nanoflowers, which is applied in the field of nanomaterials, can solve the problems of cumbersome and time-consuming steps of nanoflower-shaped copper oxide

Inactive Publication Date: 2021-06-04
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above-mentioned problems such as cumbersome steps and time-consuming preparation of nano-flower-sh

Method used

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  • Preparation method of copper oxide with nano flower-like structure
  • Preparation method of copper oxide with nano flower-like structure
  • Preparation method of copper oxide with nano flower-like structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for preparing copper oxide with a nano-flower structure, comprising the steps of:

[0049] Soak foamed copper with an area of ​​2cm×2cm in 20ml of a mixed solution containing 2.5mol / l sodium hydroxide and 0.2mol / l ammonium persulfate, react for 10 minutes, wash with water repeatedly after the reaction, and place in a 60°C oven Dry to obtain copper oxide.

[0050] figure 1 To analyze the morphology of the copper oxide in Example 1 by a Hitachi su1510 scanning electron microscope. Depend on figure 1 As shown, copper oxide nanowires are formed at this time, the length of which is between 1 μm and 5 μm, and the diameter is approximately between 100 and 500 nm.

[0051] A 5 μL water drop was dropped on the copper oxide surface prepared in Example 1 by a contact angle measuring instrument, and the static water contact angle was 0°.

Embodiment 2

[0053] A method for preparing copper oxide with a nano-flower structure, comprising the steps of:

[0054] Soak foam copper with an area of ​​2cm×2cm in 20ml of a mixed solution containing 2.5mol / l sodium hydroxide and 0.2mol / l ammonium persulfate, react for 20 minutes, wash with water repeatedly after the reaction, and place in an oven at 60°C Dry to obtain copper oxide.

[0055] figure 2 To analyze the morphology of the copper oxide in Example 2 by a Hitachi su1510 scanning electron microscope. Depend on figure 2 As shown, a nanowire-nanosheet copper oxide is formed at this time, wherein the length of the nanowire is between 1 μm and 5 μm, the diameter is between 100 and 500 nm, and the diameter of the nanosheet is between 1 μm and 3 μm.

[0056] A 5 μL water drop was dropped on the copper oxide surface prepared in Example 2 by a contact angle measuring instrument, and the static water contact angle was 0°.

Embodiment 3

[0058] A method for preparing copper oxide with a nano-flower structure, comprising the steps of:

[0059] Soak foam copper with an area of ​​2cm×2cm in 20ml of a mixed solution containing 2.5mol / l sodium hydroxide and 0.2mol / l ammonium persulfate, react for 30 minutes, wash with water repeatedly after the reaction, and place in an oven at 60°C Dry to obtain copper oxide.

[0060] image 3 It is the morphology analysis of the copper oxide in Example 3 by a Hitachi su1510 scanning electron microscope. Depend on image 3 As shown, at this time, nanoflower-shaped copper oxide is formed, wherein the diameter of the nanoflower is about 1 μm˜5 μm.

[0061] A 5 μL water drop was dropped on the copper oxide surface prepared in Example 3 by a contact angle measuring instrument, and the static water contact angle was 0°.

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Abstract

The invention discloses a preparation method of copper oxide with a nano flower-shaped structure, and belongs to the technical field of functional materials. The preparation method of the nano flower-shaped copper oxide comprises the steps: adding a copper net/foamy copper into a mixed solution of sodium hydroxide and ammonium persulfate, reacting the reaction solution at the temperature of 20-50 DEG C for 10-60 minutes, and finally taking out, washing with water and drying to obtain the copper oxide with the nano flower-shaped structure. The nano flower-shaped copper oxide prepared by the method disclosed by the invention has the diameter of about 1-10 [nu]m, high purity, super-hydrophilic performance and a water contact angle of 0 degree. The preparation method disclosed by the invention is a one-step method, and is simple, convenient, short in time consumption, low in energy consumption and easy for large-scale production. The nano flower-shaped copper oxide prepared by the method has excellent photoresponse characteristics and an effect of photocatalytic degradation of pollutants.

Description

technical field [0001] The invention relates to a method for preparing copper oxide with a nano-flower structure, belonging to the technical field of nano-materials. Background technique [0002] Copper oxide is a black oxide of copper, which has excellent thermal and chemical stability at high temperature, with a band gap of about 1.2eV, and a high light absorption coefficient in the ultraviolet-visible-near-infrared band. The absorbed light can be converted into heat through the non-radiative recombination of electron-hole pairs generated by light absorption. It is an important solar photothermal absorption layer, photovoltaic, photoelectric catalysis and photodetection material; as an important p-type semiconductor, Copper oxide has a large exciton binding energy, and has great application prospects in batteries, supercapacitors, solar cells, and optoelectronic devices. In addition, copper oxide also shows excellent catalytic performance, and has important applications i...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y30/00B82Y40/00B01J23/72
CPCB01J23/72B01J35/004B82Y30/00B82Y40/00C01G3/02C01P2002/72C01P2004/03C01P2004/62
Inventor 范雪荣王丹朱若斐娄江飞袁久刚徐进
Owner JIANGNAN UNIV
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