1. Department of Chemistry
2. College of Science and Arts
3. Najran University
4. Najran
5. Kingdom of Saudi Arabia
6. Laboratoire Génie des Procédés et Environnement
7. Faculté des Sciences et Techniques Mohammedia, Hassan II University of Casablanca
8. Mohammedia
9. Morocco
10. JCDAV College
11. Dasuya-144205
12. India
13. Promising Centre for Sensors and Electronic Devices (PCSED)
14. Department of Physics
15. Faculty of Science
16. King Khalid University
17. Abha
18. Department of Materials Science
19. University of Patras
20. Patras GR-26504
21. Greece