1. Chemistry Department King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia
2. Centre for Advanced Materials and Applications Utkal University Vanivihar Bhubaneswar 51004 India
3. Department of Material Chemistry Graduate School of Engineering Kyoto University Nishikyo-ku Kyoto 615-8520 Japan
4. Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES) King Fahd University of Petroleum & Minerals KFUPM Box 5040 Dhahran 31261 Saudi Arabia
5. Physics Department King Fahd University of Petroleum & Minerals KFUPM Box 5047 Dhahran 31261 Saudi Arabia
6. K.A. CARE Energy Research & Innovation Center King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia