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The Scientific World Journal
Volume 2012, Article ID 480527, 8 pages
http://dx.doi.org/10.1100/2012/480527
Research Article

ZnFe 2 O 4 -TiO 2 Nanoparticles within Mesoporous MCM-41

1School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
2Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China

Received 4 May 2012; Accepted 5 June 2012

Academic Editors: G. Gorrasi, S. H. Hur, and J. Koetz

Copyright © 2012 Aidong Tang 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

A novel nanocomposite ZnFe2O4-TiO2/MCM-41 (ZTM) was synthesized by a sol-gel method and characterized through X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), N2 adsorption-desorption, Raman spectroscopy, and ultraviolet visible (UV-vis) spectrophotometry. The results confirmed the incorporation of ZnFe2O4-TiO2 nanoparticles inside the pores of the mesoporous MCM-41 host without destroying its integrity. ZnFe2O4 nanoparticles can inhibit the transformation of anatase into rutile phase of TiO2. Incorporation of ZnFe2O4-TiO2 within MCM-41 avoided the agglomeration of nanoparticles and reduced the band gap energy of TiO2 to enhance its visible light photocatalytic activity. UV-vis absorption edges of ZTM nanocomposites redshifted with the increase of Zn/Ti molar ratio. The nanocomposite approach could be a potential choice for enhancing the photoactivity of TiO2, indicating an interesting application in the photodegradation and photoelectric fields.