Mar 162010
 

WOC

Could cars of the future be powered by just water and a solar collector on the roof?

Scientists at Emory University, Atlanta, Georgia, have built on feats of Mother Nature to develop the most potent homogeneous catalyst known for water oxidation, which they hope will lead to producing clean hydrogen fuel using only water and sunlight. Could cars of the future be powered by just water and a solar collector on the roof?

The water oxidation catalyst (WOC) research is a component of the Emory Bio-inspired Renewable Energy Center (EBREC), which aims to copy natural processes like photosynthesis to generate clean fuel. The next step involves incorporating the WOC into a solar-driven, water-splitting system. The long-term goal is to use sunlight to split water into oxygen and hydrogen. While hydrogen becomes the fuel, its combustion produces water – which would then flow back into a clean, green, renewable cycle. “The fastest, carbon-free molecular WOC to date has really upped the standard from the other known homogeneous WOCs,” said Emory inorganic chemist Craig Hill, whose lab led the effort. “It’s like a home run compared to a base hit.”

The new WOC is based on the cheap and abundant element cobalt, adding to its potential to help solar energy go mainstream.

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