Anoxic photochemical oxidation of siderite generates molecular hydrogen and iron oxides.

Abstract

Photochemical reactions of minerals are underappreciated processes that can make or break chemical bonds. We report the photooxidation of siderite (FeCO3) by UV radiation to produce hydrogen gas and iron oxides via a two-photon reaction. The calculated quantum yield for the reaction suggests photooxidation of siderite would have been a significant source of… (More)
DOI: 10.1073/pnas.1308958110

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