1. Institute for the Study of Nanostructured Materials (ISMN), National Research Council (CNR), Via Ugo La Malfa 153, 90146 Palermo, Italy
2. Department of Chemistry, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
3. “Schiavello-Grillone” Photocatalysis Group, Department of Engineering, University of Palermo, Viale delle Scienze, 90128 Palermo, Italy
4. Interuniversity Consortium in Chemical Reactivity and Catalysis (C.I.R.C.C.), University of Catania Research Unit (UdR of Catania), Viale A. Doria 6, 95125 Catania, Italy