Method for simply and stably preparing micro-nano hollow copper

A micro-nano and stable technology, applied in nanotechnology and other directions, can solve the problems of complex and difficult operation and difficult to achieve scale, and achieve the effect of simple operation method, low preparation cost and good gas sensing characteristics.

Inactive Publication Date: 2015-05-20
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a simple and stable method for preparing micro-nano hollow copper, which solves the problems of complex operation, difficult control and difficult realization of scale when preparing nano-copper in the prior art

Method used

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  • Method for simply and stably preparing micro-nano hollow copper
  • Method for simply and stably preparing micro-nano hollow copper
  • Method for simply and stably preparing micro-nano hollow copper

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: The preparation method of the micro-nano copper particles includes: using copper sulfate, polyvinylpyrrolidone, sodium hydroxide and hydrazine hydrate as raw materials to generate micro-nano copper with a hollow structure through reaction;

[0020] Specific steps are as follows:

[0021] (1) 0.16g copper sulfate (Cu SO 4 ) into 100ml of water, put into a water bath and heat;

[0022] (2) Add 0.18g polyvinylpyrrolidone (PVP, k30, molecular weight 50000) into the above solution and stir vigorously;

[0023] (3) 1.5g sodium hydroxide is added into 25ml water, is made into the aqueous solution of sodium hydroxide, then adds in the described solution of step (2), stirs;

[0024] (4) Add 2ml of hydrazine hydrate aqueous solution prepared in advance at 1:15 into the solution described in step (3), and stir;

[0025] (5) Adjust the temperature of the water bath to 65°C, react for 30 minutes, and tan Cu particles are formed, and the solid-liquid two-phase contai...

Embodiment 2

[0027] Embodiment 2: The specific steps of the micronano copper particle preparation method are as follows:

[0028] (1) 0.16g copper sulfate (CuSO 4 ) into 100ml of water, put into a water bath and heat;

[0029] (2) Add 0.18g polyvinylpyrrolidone (PVP, k30, molecular weight 50000) into the above solution and stir vigorously;

[0030] (3) 1.5g sodium hydroxide is added into 25ml water, is made into the aqueous solution of sodium hydroxide, then adds in the described solution of step (2), stirs;

[0031] (4) Add 2ml of hydrazine hydrate aqueous solution prepared in advance at 1:15 into the solution described in step (3), and stir;

[0032] (5) Adjust the temperature of the water bath to 80°C, react for 9 minutes, and tan Cu particles are formed, and the solid-liquid two-phase containing Cu particles is centrifuged at high speed to obtain Cu solid particles, and then use absolute alcohol and deionized Water cross-washes Cu particles several times to remove other impurities i...

Embodiment 3

[0034] Embodiment 3: The specific steps of the preparation method of the micro-nano copper particles are as follows:

[0035] (1) 0.16g copper sulfate (Cu SO 4 ) into 100ml of water, put into a water bath and heat;

[0036] (2) Add 0.18g polyvinylpyrrolidone (PVP, k30, molecular weight 50000) into the above solution and stir vigorously;

[0037] (3) 1.5g sodium hydroxide is added into 25ml water, is made into the aqueous solution of sodium hydroxide, then adds in the described solution of step (2), stirs;

[0038] (4) Add 2ml of hydrazine hydrate aqueous solution prepared in advance at 1:15 into the solution described in step (3), and stir;

[0039] (5) Adjust the temperature of the water bath to 80°C, react for 30 minutes, and tan Cu particles are formed, and the solid-liquid two-phase containing Cu particles is centrifuged at high speed to obtain Cu solid particles, and then use absolute alcohol and deionized Water cross-washes Cu particles several times to remove other i...

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Abstract

The invention provides a method for simply and stably preparing micro-nano hollow copper, and belongs to method for preparing hollow copper. The method includes the steps that firstly, copper sulfate is dissolved in water and placed in a water bath kettle to be heated; secondly, polyvinylpyrrolidone is added to the solution and stirred; thirdly, water is added to sodium hydroxide, and a water solution of sodium hydroxide is prepared, added to the solution in the second step and stirred; fourthly, a pre-mixed hydrazine hydrate solution is added to the solution in the third step and stirred; fifthly, the water bath kettle is adjusted to the proper temperature, sepia Cu particles are generated, solid-liquid two phases containing the Cu particles are centrifuged at a high speed, Cu solid particles are acquired and washed multiple times with anhydrous alcohol and deionized water in a cross mode, and other impurities generated in the reaction process are removed; sixthly, Cu powder containing water or alcohol is placed in a vacuum drying oven to be dried, and then the high-purity Cu micro-nano particles can be acquired. The method has the advantages of being low in cost, simple in preparation process, high in purity, good in repeatability and high in surface chemical activity.

Description

technical field [0001] The invention relates to a method for preparing hollow copper, in particular to a simple and stable method for preparing micronano hollow copper. Background technique [0002] Because copper nanoparticles have a series of physical and chemical properties such as high electrical conductivity and excellent chemical activity, they are widely used in basic research and industrial production, and can be used as solar energy conversion, combustion active agent, water cleaning adsorbent, etc. use. As an important industrial raw material, nano-copper powder can greatly reduce industrial costs in the production of high-grade lubricants, conductive pastes, high-efficiency catalysts, etc., and has broad application prospects. Moreover, nanomaterials made of nano-copper and metal oxides with heterostructures can improve their photocatalytic performance and gas-sensing properties. Therefore, the research on nano-copper powder has attracted widespread attention at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
Inventor 吴玲寻之朋张伦石礼伟于桂丽
Owner CHINA UNIV OF MINING & TECH
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