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Production of nanometer copper oxide with controllable microstructure

A nano-copper oxide, micro-structure technology, applied in nano-structure manufacturing, copper oxide/copper hydroxide, nanotechnology and other directions, can solve the problems of harsh reaction conditions, small reaction volume, high cost, low reaction temperature and simple operation. , the effect of equipment convenience

Inactive Publication Date: 2008-12-17
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For the above method, although the operation of the solid phase method is simple, the particle size distribution of the obtained product is not uniform, and it is inconvenient to control the microstructure.
Other methods, such as good product dispersibility and high specific surface area in organic solvent system, but low yield, high cost, and very harsh reaction conditions; low preparation cost in aqueous phase system, but poor product dispersibility, and In order to obtain products with different shapes, stabilizers need to be added, and the reaction volume is very small, which is not conducive to industrial production

Method used

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  • Production of nanometer copper oxide with controllable microstructure
  • Production of nanometer copper oxide with controllable microstructure
  • Production of nanometer copper oxide with controllable microstructure

Examples

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preparation example Construction

[0025] Combine figure 1 , The method for preparing nano-structured controllable copper oxide of the present invention includes the following steps:

[0026] The first step is to dissolve copper nitrate in water and stir to prepare a molar concentration of 0.02~0.1mol·L -1 Of copper nitrate solution;

[0027] In the second step, the copper nitrate solution is vigorously stirred at a temperature of 0-100°C, and the copper nitrate is fully dissolved;

[0028] In the third step, the solid sodium hydroxide is added to the copper nitrate solution at the temperature in the second step at one time to carry out a chemical reaction, and the molar ratio of copper nitrate to sodium hydroxide is 1:2-2.5;

[0029] In the fourth step, the blue precipitate suspension produced by the reaction in the third step is heated to 95-100°C, and the reaction produces a black precipitate suspension after fully stirring for 0.5-1 hour;

[0030] In the fifth step, the resulting black precipitate suspension i...

Embodiment 1

[0034] Example 1: Combination figure 1 , figure 2 , The method for preparing nano-structured controllable copper oxide of the present invention includes the following steps:

[0035] The first step: In a three-necked flask equipped with a mechanical stirring and reflux device, respectively add 1.45g copper nitrate and 300mL water, stir for 10-20 minutes to fully dissolve;

[0036] In the second step, adjust the temperature of the prepared copper nitrate solution to 100°C under vigorous stirring;

[0037] In the third step, 0.5g of NaOH solid was quickly added to the copper nitrate solution at 100°C at one time, the reaction was very violent, and a large amount of black precipitate was immediately formed;

[0038] In the fourth step, the above-mentioned black precipitate suspension is fully stirred and reacted at 100°C for 0.5 to 1 hour;

[0039] In the fifth step, the black powder obtained by centrifuging, washing and drying the aged black precipitate suspension is the rod-shape...

Embodiment 2

[0040] Example 2: Combination figure 1 , The method for preparing nano-structured controllable copper oxide of the present invention includes the following steps:

[0041] The first step: In a three-necked flask equipped with a mechanical stirring and reflux device, add 2.9g copper nitrate and 300mL water respectively, and stir for 10-20 minutes to fully dissolve;

[0042] In the second step, adjust the temperature of the prepared copper nitrate solution to 80°C under vigorous stirring;

[0043] In the third step, 1g of NaOH solid was quickly added to the above-mentioned copper nitrate solution at 80°C at one time, the reaction was violent, and a large amount of black precipitate was formed soon;

[0044] In the fourth step, the temperature of the black precipitation suspension is raised to 99°C, and then the reaction is fully stirred for 0.5 to 1 hour;

[0045] In the fifth step, the black powder obtained by centrifuging, washing and drying the aged black precipitate suspension ...

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Abstract

Production of nanometer copper oxide with controllable microstructure is carried out by dissolving cupric nitrate into water, agitating to obtain cupric nitrate solution, agitating cupric nitrate solution at 0í½100íÒC strongly, adding solid sodium hydrate into the cupric nitrate solution to have chemical reaction in proportion 1:2í½2.5 mol, raising temperature of the reactant blue precipitated soliquoid, agitating to obtain black precipitated soliquoid, centrifuging, washing and drying to obtain nanometer copper oxide. Its advantages include low reacting temperature, small particle diameter, uniform dispersion and no need for stabilizer or surface active agent.

Description

One technical field [0001] The invention relates to a method for preparing nano materials, in particular to a method for preparing nanometer copper oxide with a controllable microstructure. 2. Background technology [0002] As a versatile inorganic material with a wide range of uses, CuO has unique electrical, magnetic, and catalytic properties, and is widely used in important fields such as glass, catalysts, gas sensors, magnetic storage media, and electrode active materials. With the development of nano-science and technology, the preparation, characteristics and applications of nano-CuO have also attracted more and more attention. The performance of nanomaterials depends not only on the chemical composition of the material, but also on the size, microscopic morphology, surface state and structure of the material. Only when effective control of the microstructure of nanomaterials is achieved can it be further applied. In high-tech fields such as microelectronic devices. The exi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/02B82B3/00
Inventor 汪信朱俊武刘孝恒陆路德杨绪杰卑凤利韩巧凤江晓红王艳萍罗元香
Owner NANJING UNIV OF SCI & TECH