1. Center of Research Excellence in Nanotechnology (CENT)
2. King Fahd University of Petroleum and Minerals
3. Dhahran 31261
4. Saudi Arabia
5. Chemistry Department
6. Department of Chemistry
7. Allama Iqbal Open University
8. Islamabad
9. Pakistan
10. Center of Research Excellence in Petroleum Refining and Petrochemicals (CoRE-PRP)
11. Dhahran