1. Department of Environmental Science and Engineering, Fuzhou University, 2 Xue Yuan Road, New Campus, Minhou, Fuzhou, Fujian 350108, P. R. China
2. State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 2 Xue Yuan Road, New Campus, Minhou, Fuzhou, Fujian 350108, P. R. China