1. School of Environment and Chemical Engineering
2. North China Electric Power University
3. Beijing 102206
4. P. R. China
5. Key Laboratory of Novel Thin Film Solar Cells
6. Institute of Plasma Physics
7. Chinese Academy of Sciences
8. Hefei 230031
9. Department of Mathematics
10. Quaid-I-Azam University
11. Islamabad 44000
12. Pakistan
13. NAAM Research Group
14. Key Laboratory of Organic Solids
15. Institute of Chemistry
16. Beijing 100190
17. Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions