Catching the sunlight: The disordered Co1.28Mn1.71O4 was synthesized by a facile reduction method in the presence of amorphous MnO2 precursors and Co(2+). It exhibits relatively high hydrogen-production activity under visible-light irradiation (see figure). The larger number of active sites in the bulk catalyst endow nanoparticles with improved water-reduction activity. This is the first demonstration of disordered ternary oxides for visible-light-driven hydrogen evolution in the absence of a cocatalyst.
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Chen et al. (2013) studied this question.
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