Recently, the research and development of photocatalytic materials has attracted increasing attention because of its potentials in solving global energy and environmental problems. Among various semiconductor photocatalysts, titania is the most important photocatalyst because of its biological and chemical inertness, nontoxicity, cost effectiveness, and strong oxidizing power under UV and visible light irradiation. However, the photocatalytic activity of titania must be further enhanced from the viewpoint of practical use and commerce.

To achieve this purpose, we invite investigators to contribute original research articles as well as review articles that will stimulate the continuing efforts to understand fabrication of highly active TiO₂ photocatalytic materials, the effects of specific surface areas and crystallization on photocatalytic activity, characterization of hierarchical porous structures, and the enhanced mechanisms of photocatalytic activity. We are particularly interested in articles describing the new methods for fabrication of novel morphological TiO₂, nanoporous and nanostructured TiO₂, and recent developments in both experimental and theoretical aspects and technological applications. Potential topics include, but are not limited to:

• Recent developments in fabrication methods of TiO₂
• Surface modification of TiO₂
• Development of novel TiO₂ photocatalytic materials
• Nanostructured and nanoporous TiO₂ photocatalytic materials
• Characterization of TiO₂ photocatalysts
• Electronic properties of TiO₂ photocatalysts
• Photoelectrochemistry of TiO₂
• TiO₂ application in environmental purification
• TiO₂ application in hydrogen production

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