1. Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
2. School of Materials Science and Engineering, 50 Nanyang Avenue, Nanyang Technological University, Singapore 639798, Singapore
3. Energy Research Institute@NTU (ERI@N), Nanyang Technological University, Interdisciplinary Graduate School, Research Techno Plaza, Singapore 637553, Singapore
4. Institute of Chemical and Engineering Sciences A*STAR, 1 Pesek Road, Singapore 627833, Singapore
5. Energy Research Institute@NTU (ERI@N), Nanyang Technological University, Research Techno Plaza, Singapore 637553, Singapore
6. Solar Fuels Laboratory, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore