http://onlinelibrary.wiley.com/doi/10.1002/hlca.19780610740/abstract
Hydrogen Evolution from Water by Visible Light, a Homogeneous Three
Component Test System for Redox Catalysis
1. Kuppuswamy Kalyanasundaram1,
2. John Kiwi2,
3. Michael Grätzel2
Article first published online: 25 OCT 2004
DOI: 10.1002/hlca.19780610740