1. School of Chemical and Biomedical Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
2. Cambridge Center for Advanced Research in Energy Efficiency in Singapore (CARES); CREATE Tower, 1 Create Way, #05-00 Singapore 138602 Singapore
3. Department of Chemical Engineering and Biotechnology; University of Cambridge; New Museums Site, Pembroke Street Cambridge CB2 3RA UK