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Evolution of Textural, Structural and Morphological Properties of Ag/TiO2 Nanocomposites Tailored by Temperature

Published online by Cambridge University Press:  31 January 2011

Marcelo Viana  and
Nelcy Della Santina Mohallem
Marcelo Viana
Affiliation:
mamaviquimica@yahoo.com.br, UFMG, Laboratory of Nanostructured Materials, Chemistry Department, Belo Horizonte, Brazil
Nelcy Della Santina Mohallem
Affiliation:
nelcy@ufmg.br, UFMG, Laboratory of Nanostructured Materials, Chemistry Department, Belo Horizonte, Brazil
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Abstract

TiO2 is a promising material for use in environmental purification due to its strong oxidizing power, photoinduced hydrophilicity, non-toxicity and long-term photostability. Nanocomposites formed by silver dispersed in titania matrix have their application quality improved since silver particles can act in the electronic structure of the titania. In this work, titanium isopropoxide and silver nitrate solution was used as starting of Ag/TiO2 nanocomposites. After irradiation and gelification at room temperature, this material was dried and calcined at various temperatures up to 1100 °C. The nanocomposites were characterized to investigate the structural evolution of the nanoparticles and the dependence of crystallite size with the calcination temperature.

Keywords

sol-gelscanning electron microscopy (SEM)transmission electron microscopy (TEM)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1174: Symposium V – Functional Metal-Oxide Nanostructures , 2009 , 1174-V06-25
Copyright
Copyright © Materials Research Society 2009

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