1. Graduate School of Science and Technology; Hirosaki University; 1-Bunkyocho Hirosaki 036-8560 Japan
2. Department of Renewable Energy; Institute of Regional Innovation (IRI); Hirosaki University; 2-1-3 Matsubara Aomori 030-0813 Japan
3. Taiyuan University of Technology; School of Chemistry and Chemical Engineering; Taiyuan 030024, P.R. China