1. State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, No. 388, Lumo Road, Hongshan District, Wuhan 430074, P. R. China
2. Kagami Memorial Institute for Materials Science and Engineering, Waseda University, Nishi-Waseda 2-8-26, Shinjuku-ku, Tokyo 169-0051, Japan
3. School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu first road, Donghu New & High Technology Development Zone, Wuhan, Hubei Province, Wuhan 430205, P. R. China
4. School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia