Molecular metal-oxides as visible-light driven synthetic oxygen evolving catalysts

Carsten Streb

Institute of Inorganic Chemistry II, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstr. 1, 91058 Erlangen, Germany




Harvesting sunlight for sustainable energy conversion systems requires highly stable chemical complexes which should ideally be based on economically viable base metals such as 3d-transition metals. One promising class of molecular compounds are molecular metal oxides, so-called polyoxometalates. We show that heterometal-substituted molecular vanadium oxide clusters can be used for the direct conversion of visible light into chemical reactivity and it is demonstrated that using this concept, a solid-state catalyst can be prepared which shows promising reactivity and high stability in the sustained, visible-light driven water oxidation from aqueous solution. Initial structural, catalytic and photochemical analyses will be presented together with an outlook of how the system will be developed further.