1. Department of Environmental Science and Engineering; Fuzhou University; Minhou Fujian 350108 P. R. China
2. State Key Laboratory of Photocatalysis on Energy and Environment; Fuzhou University; Minhou Fujian 350108 P. R. China
3. Key Laboratory of Eco-materials Advanced Technology; Fuzhou University; Minhou Fujian 350108 P. R. China