1. M. Schiavello, Photocatalysis and Environment Trends and Applications, NATO ASI Ser. (Kluwer Academic, Dordrecht, 1988).
2. D. F. Ollis and H. Al-Ekabi, Photocatalytic Purification and Treatment of Water and Air (Elsevier, Amsterdam, 1993).
3. U. Diebold, Surf. Sci. Rep. 48, 53 (2003).
4. A. Fujishima and K. Honda, Nature 238, 37 (1972).
5. U. Diebold, Surf. Sci. Rep. 48, 53 (2003).