Table of Contents
ISRN Nanotechnology
Volume 2011 (2011), Article ID 729594, 7 pages
http://dx.doi.org/10.5402/2011/729594
Research Article

Copper Nanoparticles Prepared from Oxalic Precursors

Institut Carnot CIRIMAT, UMR CNRS 5085, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 09, France

Received 19 May 2011; Accepted 11 July 2011

Academic Editor: K. Torigoe

Copyright © 2011 Valérie Baco-Carles et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The synthesis of nanoparticles of copper metal via a soft chemistry route is presented in this paper. The method is based on the thermal decomposition under nitrogen or hydrogen of oxalic precursors with a well-controlled morphology and particle size. The precipitation of the copper oxalates in a water-alcohol medium allows the submicron size of the precursor grains to be controlled and, consequently, the nanometric size of the metallic copper particles to be determined, as required, between 3.5 and 40 nm. The majority of the final particles are made of pure copper metal although some present a superficial layer of cuprous oxide (Cu2O).