1. Department of Mechanical Engineering City University of Hong Kong Hong Kong 999077 China
2. School of Energy and Environment City University of Hong Kong Hong Kong 999077 China
3. Department of Mechanical and Construction Engineering Northumbria University Newcastle upon Tyne NE1 8ST UK
4. State Key Laboratory of Organic Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China
5. Department of Chemical Engineering and Biotechnology Cambridge University Cambridge CB2 1TN UK
6. School of Engineering Newcastle University Newcastle upon Tyne NE1 7RU UK
7. Department of Chemistry City University of Hong Kong Hong Kong 999077 China