IJE TRANSACTIONS B: Applications Vol. 19, No. 1 (December 2006) 53-60   

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S. H. Tohidi* and A. J. Novinrooz

Material and Ion Beams Division, Nuclear Research Center for Agriculture and Medicine
AEOI, P.O. Box 31485/498, Karaj, Iran

M. Derhambakhsh

Shahd Scientific Institute
P.O. Box 141557517, Tehran, Iran

*Corresponding Author

( Received: August 27, 2005 – Accepted in Revised Form: August 09, 2006 )

Abstract    The silica xerogel is prepared using copper source; 0.02 mol of Cu(NO3)2.3H2O that has been added to 1 mol TEOS (tetraethyl orthosilicate). The Copper ions are doped to silica matrix by the sol gel method and determination of total molar ratio of components with a reported molar ratio of H2O /TEOS(R) = 6.2. In this method, the acidity the of reaction (pH) depends on the catalyst type in the hydrolysis step and the molar ratio of H2O /TEOS (R) that is studied with gelation time (tg). In this reaction, acidity varies between 2.4 and 3.5. Average size and molecular structure of this nanocomposite were analyzed using TEM, FTIR and XRD. Copper oxide can be produced from the decomposition of copper nitrate and is doped on the silica matrix by thermal treatment.


Keywords    Sol Gel Process, Copper (II) ions, Xerogel Matrix



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