1. Department of Biological Chemical and Pharmaceutical Sciences and Technologies (STEBICEF) and INSTM UdR – Palermo University of Palermo Viale delle Scienze, Ed. 17 90128 Palermo Italy
2. Unit of Nanomaterials Chemistry Department of Chemistry NISM University of Namur 61 rue de Bruxelles 5000 Namur Belgium
3. Institute for the Study of Nanostructured Materials (ISMN) Italian) National Research Council (CNR) Via Ugo La Malfa 153 90146 Palermo Italy