1. School of Environmental Science and Engineering
2. Shaanxi University of Science and Technology
3. Xian 710021
4. PR China
5. Department of Applied Chemistry
6. Dalian National Laboratory for Clean Energy
7. Dalian Institute of Chemical Physics
8. Chinese Academy of Sciences
9. Dalian 116023
10. School of Engineering
11. University of Toyama
12. Toyama
13. Japan