1. College of Energy; Xiamen University; Xiamen 361005 P. R. China
2. College of Chemical Engineering; Chongqing University of Technology; Chongqing 400054 P. R. China
3. School of Chemistry, Physics and Mechanical Engineering, Institute for Future Environments; Queensland University of Technology; Brisbane Queensland 4000 Australia
4. CSIRO - QUT Joint Sustainable Materials and Devices Laboratory; Commonwealth Scientific and Industrial Research Organization; P.O. Box 218 Lindfield New South Wales 2070 Australia
5. Beijing National Laboratory for Molecular Sciences (BNLMS); College of Chemistry and Molecular Engineering; Peking University; Beijing 100871 P. R. China
6. School of Physics; The University of Sydney; Sydney New South Wales 2006 Australia