1. Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, P. R. China
2. Anhui Province Key Laboratory for Degradation and Monitoring of Pollution of the Environment, School of Chemistry & Materials Engineering Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
3. Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China
4. School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China