1. Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Lembah Pantai, Kuala Lumpur 50603 Malaysia
2. Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Asir, Kingdom Saudi Arabia
3. Mechanical Engineering Department, College of Engineering, King Khalid University, Abha 61413, Asir, Kingdom Saudi Arabia