1. Department of Chemistry and Earth Sciences, Qatar University, Doha, Qatar;
2. Department of Chemistry, Science College, An-Najah National University, Nablus, Palestine;
3. Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore, India;
4. Department of Biochemistry, Faculty of Applied Science College, University of Hajjah, Yemen;
5. Laboratory of Materials, Nanotechnology and Environment, Mohammed V University, Faculty of Sciences, Rabat, Morocco