1. School of Material Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
2. Interdisciplinary Graduate Programme, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
3. Environmental Chemistry and Materials Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 637141 Singapore
4. School of Chemical and Biomedical Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore