1. Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, South China Normal University, Guangzhou 510006, People's Republic of China
2. School of Chemistry, South China Normal University, Guangzhou 510006, People’s Republic of China
3. Department of Chemistry, Duke University, Durham, North Carolina 27708, USA
4. Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety; SCNU Environmental Research Institute; School of Environment, South China Normal University, Guangzhou 510006, People’s Republic of China