1. Department of Materials Science and Engineering University of Toronto 184 College Street Toronto Ontario M5S 3E4 Canada
2. Materials Chemistry and Nanochemistry Research Group Solar Fuels Cluster Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
3. Department of Chemical Engineering and Applied Chemistry University of Toronto 200 College Street Toronto Ontario M5S 3E5 Canada
4. Department of Mechanical Engineering Lassonde School of Engineering York University Toronto M3J 1P3 Canada
5. Department of Chemistry Dalhousie University 6274 Coburg Road, P.O. Box 15000 Halifax Nova Scotia B3H 4R2 Canada
6. Condensed Matter Physics and Materials Science Department Brookhaven National Laboratory Upton NY 11973 USA
7. Department of Physics Temple University Philadelphia PA 19122 USA
8. State Key Laboratory of Coal Conversion Institute of Coal Chemistry The Chinese Academy of Sciences Taiyuan 030001 P. R. China
9. Zhejiang Key Laboratory of Drinking Water Safety and Distribution Technology Zhejiang University Hangzhou 310058 P. R. China
10. Department of Electrical and Computing Engineering University of Toronto 10 King's College Road Toronto Ontario M5S 3G4 Canada