1. Department of Chemistry and Physics, Faculty of Education, Alexandria University, El-Shatby, 21526, Alexandria, Egypt
2. Department of Chemistry, Faculty of Science, Alexandria University, Ibrahimia, P. O. Box 426, Alexandria, Egypt
3. Department of Materials Science, Institute of Graduate Studies and Research (IGSR), Alexandria University, 163 Horrya Avenue, El-Shatby, P. O. Box 832, Alexandria, Egypt