1. Center
of Research Excellence in Nanotechnology and Department of Chemical
Engineering King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
2. Department
of Chemical Engineering, Sultan Ageng Tirtayasa University, Cilegon, Banten 42435, Indonesia
3. Chemical
Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503, Japan