1. Yamaguchi University, Tokiwadai, Ube, Yamaguchi 755-8611, Japan
2. University of Toyama, Gofuku, Toyama 930-8555, Japan
3. Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan
4. Tokyo University of Science, Shinjuku Katsushika-ku, Tokyo 125-8585, Japan
5. ICAT Fellow, Institute for Catalysis, Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
6. Blue Energy Center for SGE Technology (BEST), Ube, Yamaguchi 755-8611, Japan