1. Department of Mechanical Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
2. Center for Catalysis and Separations (CeCaS Center), Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
3. Department of Chemical Engineering and Research and Innovation Center on CO2 and Hydrogen (RICH Center), Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
4. Department of Chemistry, Heterogeneous Catalysis Laboratory, University of Cyprus, 1 University Avenue, University Campus, 2109 Nicosia, Cyprus
5. Department of Physics, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
6. The Surface Analysis Laboratory, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 4DL, U.K.