SCIENCE - Rust can power up artificial photosynthesis: Chemists produce power boost critical to novel energy harvesting applications

Scientists trying to develop artificial photosynthesis for unique applications, like harvesting solar energy, have focused on narrowing the photovoltage gap between the two principle reactions of oxidation and reduction. Chemists report nearly bridging that gap using inexpensive materials in a process that could lead to new energy applications ...

http://www.sciencedaily.com/releases/2013/10/131011093958.ht