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Issue 81, 2015
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Highly efficient electrocatalytic hydrogen evolution from neutral aqueous solution by a water-soluble anionic cobalt(ii) porphyrin

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Abstract

We report the use of a water-soluble anionic cobalt(II) tetrakis(p-sulfonatophenyl)porphyrin (CoTPPS) as a stable, active, and efficient catalyst for electrocatalytic H2 generation from neutral H2O without any organic additives. The molecule features nearly quantitative Faradaic efficiency with a turnover frequency of ∼1.83 s−1 measured over 1 h and a turnover number of 1.9 × 104 moles of H2 per mole of catalyst with no loss of activity over 73 h at an applied potential of −1.29 V (vs. SHE) in neutral phosphate buffer solution.

Graphical abstract: Highly efficient electrocatalytic hydrogen evolution from neutral aqueous solution by a water-soluble anionic cobalt(ii) porphyrin

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The article was received on 07 Jul 2015, accepted on 19 Aug 2015 and first published on 19 Aug 2015


Article type: Communication
DOI: 10.1039/C5CC05582B
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Chem. Commun., 2015,51, 15067-15070

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    Highly efficient electrocatalytic hydrogen evolution from neutral aqueous solution by a water-soluble anionic cobalt(II) porphyrin

    B. B. Beyene, S. B. Mane and C. Hung, Chem. Commun., 2015, 51, 15067
    DOI: 10.1039/C5CC05582B

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