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Preparation method of nano-cuprous oxide

A nano-cuprous oxide solution technology, which is applied in the chemical industry, can solve the problems of uneven particle size and unstable performance of nano-cuprous oxide, and achieve the effects of good dispersion, uniform appearance, and cheap raw materials

Inactive Publication Date: 2015-12-09
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for preparing nano-cuprous oxide, which solves the problem of preparing nano-cuprous oxide in the prior art. The technical problems of the obtained nano-cuprous oxide are unstable and the particle size is not uniform

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  • Preparation method of nano-cuprous oxide

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Embodiment 1

[0022] A preparation method of nano-cuprous oxide is completed according to the following steps:

[0023] (1) CuCl 2 Completely dissolved in deionized water to prepare CuCl 2 solution;

[0024] (2) Control a certain temperature, add additives, stir to make it evenly dispersed in CuCl 2 in solution;

[0025] (3) Add 1.0mol / L NaOH solution dropwise to adjust CuCl 2 Solution pH;

[0026] (4) Add 0.04 g / mL freshly prepared KBH dropwise to the above solution 4 solution, reacted for 4h;

[0027] (5) After the reaction is completed, leave it at room temperature for aging, centrifuge, wash, and dry to obtain dark red Cu 2 O powder.

[0028] CuCl in the present embodiment step (1) 2 The solution concentration is 0.02mol / L.

[0029] The temperature of the water bath in steps (2)(3)(4) of this embodiment is 50-90°C.

[0030] In the present embodiment step (2), the surfactant consumption is every milliliter of CuCl 2 The solution uses 0.0025-0.01 g of a self-made additive for ...

Embodiment 2

[0035] A kind of preparation method of nano cuprous oxide is carried out according to the following steps: (1) take by weighing 3.40gCuCl 2 ?H 2 O is completely dissolved in 200mL of deionized water and prepared as CuCl with a molar concentration of 0.02mol / L 2 solution; (2) under the condition of 70°C water bath, add 1.0 g of homemade additives for adjusting surface tension based on polyvinylpyrrolidone, and stir at a constant speed with a magnetic stirrer until the additives are completely dissolved in CuCl 2 solution, and then continue to stir for 20min; (3) dropwise add 1.0mol / L NaOH solution, adjust CuCl 2 Solution pH, make the solution pH in the range of 4.6-5.0, dropwise adding time 20min; (4) After adding NaOH dropwise, after stirring for 10min, add 0.04g / mL freshly prepared KBH dropwise 4 Solution 10mL, dripping time 20min; continuous 70℃ water bath, stirring at a constant speed for 4h; (5) after the reaction is completed, stand at room temperature and age for 0.5h,...

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Abstract

The invention provides a preparation method of nano-cuprous oxide. The preparation method of nano-cuprous oxide comprises the steps of fully dissolving CuCl2 in deionized water to prepare CuCl2 solution, adding additive polyvinylpyrrolidone at temperature of 50 to 90 DEG C, agitating to enable the additive to be uniformly dispersed in the CuCl2 solution, dropping NaOH solution with concentration of 0.2 to 2mol / L, regulating the PH of the CuCl2 to 4.0 to 6.0, dropping KBH4 solution with concentration of 0.02 to 0.08g / mL drop by drop into the solution, standing and aging at room temperature after reaction, and performing centrifugal separation, washing and drying to obtain nano-Cu2O powder. The method provided by the invention uses CuCl2 as a copper source and KBH4 as reducing agent, the additive is added to regulate the surface tension of the reaction solution to control the nucleation and growth of cuprous oxide crystals, the purity of the prepared cuprous oxide is high and the crystallization degree is good.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a nano cuprous oxide, specifically a preparation method of a nano cuprous oxide. Background technique [0002] Cuprous oxide (Cu 2 O) as a P-type semiconductor with a forbidden band width of 2.1eV, it can absorb visible light and excite electron-hole pairs. It has a large specific surface area and good adsorption capacity, which well compensates for the forbidden Semiconductor photocatalysts with a large band width are difficult to perform photocatalytic degradation in the visible wavelength range, and have great research potential in the field of photocatalytic degradation. In addition, cuprous oxide is also an important chemical raw material, which has shown its importance in various aspects, such as being used as a fungicide for ship antifouling primer paint in the paint industry; used as red glass and red enamel coloring in the glass industry It is used as a f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02B82Y30/00
Inventor 王莉贤郭德华杜迎吉沈龙马柱强
Owner SHANGHAI INST OF TECH
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