1. Key Laboratory of Theoretical and Computational Photochemistry Ministry of Education College of Chemistry Beijing Normal University Beijing 100875 P.R. China
2. State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences The Chinese Academy of Sciences Beijing 100085 University of Chinese Academy of Sciences Beijing 100049 China
3. Center for Advanced Materials Research Advanced Institute of Natural Sciences Beijing Normal University at Zhuhai Zhuhai 519087 P.R. China
4. State Key Laboratory of Chemical Resource Engineering Institute of Computational Chemistry College of Chemistry Beijing University of Chemical Technology Beijing 100029 P.R. China