1. Key
Laboratory for Green Chemical Technology of the Ministry of Education,
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
2. Collaborative Innovative Centre of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
3. Department
of Physics, The University of Lahore, Lahore, Pakistan
4. School
of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
5. National
Centre for Nanoscience and Technology, Chinese Academy of Science, Beijing, China
6. Beijing Synchrotron
Radiation Facility, Institute of High Energy Physics, CAS, Beijing, China