1. School of Environment and Chemical Engineering
2. North China Electric Power University
3. Beijing 102206
4. P.R. China
5. Key Laboratory of Petroleum Resources
6. Gansu Province/Key Laboratory of Petroleum Resources Research
7. Institute of Geology and Geophysics
8. Chinese Academy of Sciences
9. Lanzhou 730000
10. Key Laboratory of Novel Thin Film Solar Cells
11. Institute of Plasma Physics
12. Hefei
13. Department of Chemistry
14. Qinghai Normal University
15. Xining
16. Division of Nanomaterials and Chemistry
17. Hefei National Laboratory for Physical Sciences at Microscale Department
18. University of Science and Technology of China