Table of Contents
Journal of Nanoparticles
Volume 2013 (2013), Article ID 156813, 5 pages
http://dx.doi.org/10.1155/2013/156813
Research Article

Dependence Properties of Sol-Gel Derived CuO@SiO2 Nanostructure to Diverse Concentrations of Copper Oxide

1Agricultural, Medical, Industrial Research School, NSTI, P.O. Box 31485- 498, Karaj, Iran
2Yerevan State University, 1 Alex Manoukian Street, 375049 Yerevan, Armenia
3Islamic Azad University, Lahijan Branch, Guilan, Iran

Received 21 May 2013; Revised 18 August 2013; Accepted 21 August 2013

Academic Editor: Xiangwu Zhang

Copyright © 2013 V. Homaunmir 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

Various concentrations of copper oxide were embedded into silica matrix of xerogel forms using copper source Cu(NO3)2·3H2O. The xerogel samples were prepared by hydrolysis and condensation of tetraethyl orthosilicate (TEOS) with determination of new molar ratios of the components by the sol-gel method. In this paper, three samples of copper oxide were doped into silica matrices using different concentrations. We obtained 10, 20, and 30 wt.% of copper oxide in silica matrices labeled as A, B, and C, respectively. The absorption and transmittance spectra of the gel matrices were treated at different concentrations by Uv-vis spectrophotometer. Quantities of water and transparency in the silica network change the spectral characteristics of Cu2+ ions in the host silica. Absorption spectra of the samples heated to higher concentration complete the conversion of Cu2+ ions to Cu+ ions. The effects of concentration of copper oxide were characterized by X-ray diffraction (XRD) patterns, and the transmission electron microscope (TEM) micrographs. Also, textural properties of samples were studied by surface area analysis (BET method) at different concentrations.