1. Laboratory of Advanced Materials, National School of Engineering, University of Sfax, P.O. Box 1173, Sfax 3038, Tunisia
2. Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
3. Research Center for the Conservation of Cultural Heritage (CISRiC), University of Pavia, Via A. Ferrata 3, 27100 Pavia, Italy
4. Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d’Alcontres, 31, 98122 Messina, Italy