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Preparation method for CuO nanoflake powdery material

A technology of powder materials and nanosheets, applied in the direction of electrolysis process, electrolysis components, etc., can solve the problems of complex preparation process, complicated preparation steps, low output, etc., and achieve the effects of simplified preparation process, environmental friendliness and high output

Active Publication Date: 2016-08-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the methods commonly used to prepare CuO nanomaterials mainly include hydrothermal synthesis, copper sheet thermal oxidation, precipitation, microemulsion or sol-gel method, etc. However, the preparation process is usually more complicated and consumes more energy.
Patent application CN201310657126.1 discloses a CuO nanosheet and its preparation method, which is to prepare a CuO nanosheet film on a glass substrate; another patent application CN201310419918.5 discloses a Cu-based CuO thin film electrode for glucose detection, It is prepared on a copper substrate to obtain a sheet-shaped CuO thin film electrode, and all obtained is a sheet-shaped CuO thin film material, and the preparation steps are relatively complicated and the output is low.

Method used

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  • Preparation method for CuO nanoflake powdery material
  • Preparation method for CuO nanoflake powdery material
  • Preparation method for CuO nanoflake powdery material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] CuO nanosheets (electrolyte is 1mol L -1 NaOH) preparation

[0022] (1) Two basically identical copper sheets are used as two electrodes, with 1mol L -1 NaOH solution is the electrolyte solution, under the action of AC voltage of about 10V and frequency of 50Hz, react at 20°C for 8h, and let it stand for a while after the reaction;

[0023] (2) The product obtained in the above step (1) was centrifuged (8000 rpm), washed with deionized water and ethanol step by step, and vacuum-dried (dried at 100° C. for 12 h) to obtain CuO nanosheet powder material. The X-ray diffraction pattern of CuO nanosheet powder material is as follows: figure 1 As shown, it can be seen from the figure that it has a single CuO diffraction peak, indicating that the powder material is a high-purity CuO crystal phase. The morphology of CuO nanosheet powder material is as follows: figure 2 shown, from figure 2 It can be seen that the CuO material presents a regular sheet-like structure.

Embodiment 2

[0025] CuO nanosheets (electrolyte is 1mol L -1 Preparation of KOH)

[0026] (1) Two basically identical copper sheets are used as two electrodes, with 1mol L -1 KOH solution is the electrolyte solution, under the action of AC voltage of about 15V and frequency of 50Hz, react at 30°C for 8h, and let it stand for a while after the reaction;

[0027] (2) The product obtained in the above step (1) was centrifuged (8000 rpm), washed with deionized water and ethanol step by step, and vacuum-dried (dried at 100° C. for 12 h) to obtain CuO nanosheet powder material. The morphology of CuO nanosheet powder material is as follows: image 3 shown, from image 3 It can be seen that the CuO material presents a regular sheet-like structure.

Embodiment 3

[0029] CuO nanosheets (electrolyte is 1mol L -1 NaOH and KOH mixed system) preparation

[0030] (1) Two basically identical copper sheets are used as two electrodes, with 1mol L -1 In the mixed electrolyte system of NaOH and KOH, under the action of AC voltage of about 15V and frequency of 50Hz, react at 40°C for 8h, and stand for a while after the reaction;

[0031] (2) The product obtained in the above step (1) was centrifuged (8000 rpm), washed with deionized water and ethanol step by step, and vacuum-dried (dried at 100° C. for 12 h) to obtain CuO nanosheet powder material.

[0032] The transmission electron microscope image of CuO nanosheet powder material is as follows Figure 4 shown, from Figure 4 The sheet-like structure of the CuO material can be seen in .

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Abstract

The invention discloses a preparation method for a CuO nanoflake powdery material. The method employs an alkaline aqueous electrolyte solution as an electrolyte and two copper metal electrodes as working electrodes, allows the electrolyte and the working electrodes to undergo a reaction under the action of alternating current, and separates the CuO nanoflake powdery material from the electrolyte. The obtained CuO nanoflake powdery material is high in purity and has regular flake structure morphology. The method has the advantages of low cost, simple operation, flexibility, friendliness to environment and high yield and is expected to realize commercial production.

Description

technical field [0001] The invention relates to a method for preparing CuO nano sheet powder material, belonging to the technical field of metal oxide nano material preparation. Background technique [0002] As a semiconductor material, CuO nanomaterials have a small energy band gap of 1.2eV, and have good optical properties, catalytic properties, magnetic properties and electrochemical properties, and are widely used in the field of photocatalysis, biosensing fields and energy storage devices. At present, scientific researchers have prepared CuO nanomaterials with various shapes by using different methods, such as CuO nanowires, nanorods, nanosheets, nanotubes, nanoflowers, spiny microspheres, and dandelion-shaped hollow structures, etc. Good physical and chemical properties of CuO can expand its application in various fields. For example, CuO nanosheet materials with one-dimensional structure can accelerate the mass transfer rate of charges and improve the rate performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/00
CPCC25B1/00
Inventor 纪效波景明俊李思敏贾鑫男黄兆东廖寒萧
Owner CENT SOUTH UNIV