1. Department of Chemistry, Taiyuan University of Technology, Taiyuan 030024, P. R. China
2. Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
3. Energy Conversion Engineering Laboratory, Institute of Regional Innovation (IRI), Hirosaki University, 3-Bunkyocho, Hirosaki 036-8561, Japan
4. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
5. Shanxi Institute of Applied Chemistry, Taiyuan 030024, P. R. China