1. Inorganic Chemistry Department; National Research Centre; 33 El-Bohouth Street Dokki Giza 12622 Egypt
2. Advanced Materials and Nanotechnology Group; Centre of Excellence for Advanced Sciences, National Research Centre; 33 El-Bohouth Street Dokki Giza 12622 Egypt
3. Cellulose and Paper Department; National Research Centre; 33 El-Bohouth Street Dokki Giza 12622 Egypt
4. Microwave Physics & Dielectrics Department; National Research Centre; 33 El-Bohouth Street Dokki Giza 12622 Egypt
5. School of Sciences; University of Louisiana at Monroe; 700 University Avenue Monroe 71209 LA USA