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International Journal of Photoenergy
Volume 2008, Article ID 419096, 1 page

Doped Nanomaterials and Applications

1Department of Chemistry, Faculty of Science, Ain Shams University, 11566 Abbassia, Cairo, Egypt
2Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università di Palermo, 90128 Palermo, Italy

Received 16 July 2008; Accepted 16 July 2008

Copyright © 2008 M. S. A. Abdel-Mottaleb 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.


This special issue briefly reviews some trends and factors that have impacted heterogeneous photocatalysis with next generation nanophotocatalysts that could absorb and make use of both UV (290–400 nm) and visible (400–700 nm) sunlight to enhance process efficiencies, along with some issues of current debate in the fundamental understanding of the science that underpins the field. Preparative methods and some characteristics features of doped as well as its environmental applications are presented and described. The next generation of doped photocatalysts should enhance overall process photoefficiencies in many cases, since doped s absorb a greater quantity of solar radiation. The fundamental science that underpins heterogeneous photocatalysis with the next generation of photocatalysts is a rich playing field ripe for further exploration.

Different articles presented in this special issue have shown that modification of by doping of different atoms, both as cations and anions, can improve photoactivity of . One reason is slowing down electron/hole recombination rate. The presence of certain dopants can increase the concentration of organic pollutants on the surface of facilitating the contact of the light-generated reactive species with the organic molecules. Doped can extend the absorption of the light to the visible region and makes the photocatalysts active under visible-light irradiation.

M. S. A. Abdel-Mottaleb
V. Augugliaro
L. Palmisano