Photochemical synthesis of a water oxidation catalyst based on cobalt nanostructures
Tse-Luen Wee, Benjamin D. Sherman, Devens Gust, A.L. Moore, T.A. Moore, Yun Liu, and J.C. Scaiano, “Photochemical synthesis of a water oxidation catalyst based on cobalt nanostructures”, J. Am. Chem. Soc., 133 (42), 16742–16745 (2011).
New cobalt-based nanocomposites have been prepared by photoreduction of Co2+ salts to generate cobalt nanoparticles deposited on carbon-based materials such as nanocyrstalline diamond and carbon felt. Spontaneous air oxidation converts the metal to Co2O3 which has been tested as a water oxidation catalyst. This work demonstrates that the cobalt oxide nanostructures can be deposited on various carbon surfaces and can catalyze the four-electron oxidation of water to oxygen under anodic bias.