1. School of Biological and Chemical ScienceChemistry DepartmentQueen Mary University of London Mile End Road London E1 4NS UK
2. Dipartimento Scienze e Tecnologie BiologicheChimiche e Farmaceutiche, STEBICEF and INSTM UdR, PalermoUniversità di Palermo Viale delle Scienze pad. 17 Palermo 90128 Italy
3. State Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou University Fuzhou 350002 P. R. China