1. Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
2. Singapore Synchrotron Light Source National University of Singapore, 5 Research Link, 117603, Singapore
3. Department of Chemical, Materials and Biomolecular Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, United States
4. Department of Materials Science and Engineering, National University of Singapore, 117575, Singapore
5. CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics Department of Materials Science and Engineering, Chinese Academy of Sciences, Beijing 100049, China
6. Department of Civil, Environmental, and Construction Engineering, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center, University of Central Florida, Orlando, Florida 32816, United States