Paper Title:
Synthesis of Nano Metal Powder by Electrochemical Reduction of Metal Oxides
  Abstract

This work has attempted to find a new low temperature reduction process for fabrication of Cu nanopowder from fine CuO powder. For this purpose, we used electrochemical reduction method which is conducted in an electrolyte of NaCl aqueous solution at room temperature. It was found that ball-milled CuO powder (particle size ~100 nm and grain size ~40 nm) was completely reduced under the conditions of 20 V power, 0.5 mol NaCl solution and 2 h reaction time, producing Cu nanopowder (particle size ~80 nm and crystallite size ~25 nm). Simultaneously, we observed that sintering of nanopowders occurred during the reduction process, leading to agglomeration of nanopowder. Based upon the experimental results, the correlation between electrochemical reduction process and its related powder characteristics was discussed in terms of material transport.

  Info
Periodical
Materials Science Forum (Volumes 449-452)
Edited by
S.-G. Kang and T. Kobayashi
Pages
1137-1140
DOI
10.4028/www.scientific.net/MSF.449-452.1137
Citation
K. J. Lee, J. S. Lee, "Synthesis of Nano Metal Powder by Electrochemical Reduction of Metal Oxides ", Materials Science Forum, Vols. 449-452, pp. 1137-1140, 2004
Online since
March 2004
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Price
$32.00
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