Decoration of the layered manganese oxide birnessite with Mn(II/III) gives a new water oxidation catalyst with fifty-fold turnover number enhancement

The role of the manganese average oxidation state (AOS) in water oxidation catalysis by birnessite was investigated. In this work, low AOS samples were most active, generating O2 immediately. Samples with a relatively high AOS showed an initial induction period and decreased turnover. Mn(II- and III...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2015-06, Vol.44 (29)
Main Authors: McKendry, Ian G., Kondaveeti, Sandeep K., Shumlas, Samantha L., Strongin, Daniel R., Zdilla, Michael J.
Format: Article
Language:English
Subjects:
catalysis (heterogeneous)
defects
energy storage (including batteries and capacitors)
hydrogen and fuel cells
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
materials and chemistry by design
mechanical behavior
solar (photovoltaic)
synthesis (novel materials)
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Summary:The role of the manganese average oxidation state (AOS) in water oxidation catalysis by birnessite was investigated. In this work, low AOS samples were most active, generating O2 immediately. Samples with a relatively high AOS showed an initial induction period and decreased turnover. Mn(II- and III) -enriched samples gave a 10–50 fold enhancement in turnover number.
ISSN:1477-9226
1477-9234