Table of Contents
Journal of Nanoparticles
Volume 2013, Article ID 507161, 7 pages
Research Article

Sol-Gel Synthesis of TiO2/SiO2 and ZnO/SiO2 Composite Films and Evaluation of Their Photocatalytic Activity towards Methyl Green

Department of Chemistry, Annamalai University, Annamalai Nagar, Tamil Nadu 608 002, India

Received 31 January 2013; Accepted 2 March 2013

Academic Editor: Amir Kajbafvala

Copyright © 2013 V. L. Chandraboss 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.


The TiO2/SiO2 and ZnO/SiO2 composite films were prepared by sol-gel dip coating method. The surface morphology and crystal structure of thin films were characterized by means of scanning electron microscopy (SEM) with elementary dispersive X-ray analysis (EDX) and X-ray diffractometer (XRD). Optical properties of films have been investigated using ultraviolet and visible spectroscopy (UV-visible spectroscopy). The photocatalytic activity was established by testing the degradation and decolorization of methyl green (MG) from aqueous solution with artificial UV-light.