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Issue 71, 2014
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Mn oxide/nanodiamond composite: a new water-oxidizing catalyst for water oxidation

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Abstract

Herein, we report nanosized Mn oxide/nanodiamond composites as water-oxidizing compounds. The composites were synthesized by easy and simple procedures by the reaction of Mn(II) and MnO4 in the presence of ND (1), the reaction of MnO4 and ND at different temperatures (2 and 4) and by the simple mixing of Mn–Ca oxide and ND (3). The compounds were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction spectrometry, Fourier transform infrared spectroscopy and atomic absorption spectroscopy. The water-oxidizing activities of these compounds were also considered in the presence of cerium(IV) ammonium nitrate. A Mn oxide/nanodiamond resulting from the reaction of MnO4 and ND shows a turnover frequency of ∼1 (mmol O2/mol Mn.s). However, other Mn oxide/nanodiamond composites show lower activity toward water oxidation.

Graphical abstract: Mn oxide/nanodiamond composite: a new water-oxidizing catalyst for water oxidation

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Publication details

The article was received on 24 Jun 2014, accepted on 31 Jul 2014 and first published on 31 Jul 2014


Article type: Paper
DOI: 10.1039/C4RA06181K
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Citation: RSC Adv., 2014,4, 37613-37619

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    Mn oxide/nanodiamond composite: a new water-oxidizing catalyst for water oxidation

    M. M. Najafpour, M. Abasi, T. Tomo and S. I. Allakhverdiev, RSC Adv., 2014, 4, 37613
    DOI: 10.1039/C4RA06181K

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