1. College of Chemistry and Chemical Engineering; Xinxiang University, Xinxiang; Henan 450003 P.R. China
2. College of Computer and Information Engineering; Xinxiang University, Xinxiang; Henan 450003 P.R. China
3. State Key Laboratory of Photocatalysis on Energy and Environment; Fuzhou University, Fuzhou; Fujian 350002 P.R. China