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Rust promises hydrogen power boost (BBC)
By Simon Redfern
BBC News
Rust could help boost the efficiency of hydrogen production from sunlight - a potentially green source of energy.
Tiny (nano-sized) particles of haematite (crystalline iron oxide, or rust) have been shown to split water into hydrogen and oxygen in the presence of solar energy.
The result could bring the goal of generating cheap hydrogen from sunlight and water a step closer to reality.
Details are published in the journal Nature Materials.
Researchers from Switzerland, the US and Israel identified what they termed "champion nanoparticles" of haematite, which are a few billionths of a metre in size.
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more: http://www.bbc.co.uk/news/science-environment-23226798