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Science 27 September 2002:
Vol. 297. no. 5590, pp. 2189 - 2190
DOI: 10.1126/science.297.5590.2189a
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News of the Week

CHEMISTRY:
Catalyst Boosts Hopes for Hydrogen Bonanza

Robert F. Service

Green-energy aficionados have long dreamed of using the sun's rays to split water molecules to release hydrogen gas, which produces only water when it burns. Now on page 2243, chemists report that adding carbon to the well-known water-splitting catalyst titanium dioxide increased the catalyst's ability to convert the energy in sunlight more than eightfold, to 8.5%, just below the U.S. Department of Energy's 10% benchmark for a commercially viable catalyst.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)