Preparation of Cu micro/nanoparticles with ascorbic acid by liquid phase reduction method

被引：0
|
作者：
Zhang M. [1 ]
Huo D. [1 ]
Sun X.-D. [1 ]
Kang Y. [2 ]
机构：
[1] Key Laboratory of Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang
[2] Sino-Dutch Biomedical and Information Engineering School, Northeastern University, Shenyang
来源：
Huo, Di (huod@atm.neu.edu.cn) | 1600年 / Central South University of Technology卷 / 27期
基金：
中国国家自然科学基金;
关键词：
Ascorbic acid; Cu powder; Mixing mode; Mixing rate;
D O I：
10.19476/j.ysxb.1004.0609.2017.04.010
中图分类号：
学科分类号：
摘要：
The micro/nano copper powders were prepared by liquid phase reduction using ascorbic acid as reducing agent. Meanwhile, the effects of pH value, mixing ways and mixing rates on the characteristics of copper powders were discussed. The as-synthesized products were characterized by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The results show that the pH value of reactive solution system has key effect on phase type and morphology of the products. Pure Cu phase is obtained in the pH range of 3-8, and then Cu and Cu2O mixed phases are obtained, finally it is pure Cu2O as the pH exceeds 13.The particle size of copper powders prepared by reverse titration is large and in micron grade. Conversely, it is small and in submicron size. The distribution of Cu powder size obtained by dump is narrow and well dispersed compared to that of the powder prepared by slow dripping. © 2017, Science Press. All right reserved.
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页码：747 / 752
页数：5
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