1. 1) A. Fujishima, X. Zhang and D. A. Tryk, Surf. Sci. Rep., 63, 515–582 (2008).
2. 2) M. R. Hoffmann, S. T. Martin, W. Choi and D. W. Bahenemann, Chem. Rev., 95, 69–96 (1995).
3. 3) S.-Y. Lee and S.-J. Park, J. Ind. Eng. Chem., 19, 1761–1769 (2013).
4. 4) K. Sunada, T. Watanabe and K. Hashimoto, J. Photoch. Photobio. A, 156, 227–233 (2003).
5. 5) X. Chen and S. S. Mao, Chem. Rev., 107, 2891–2959 (2007).