Journal
CHEMICAL COMMUNICATIONS
Volume 51, Issue 81, Pages 15067-15070Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cc05582b
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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 H-2 generation from neutral H2O without any organic additives. The molecule features nearly quantitative Faradaic efficiency with a turnover frequency of similar to 1.83 s(-1) measured over 1 h and a turnover number of 1.9 x 10(4) moles of H-2 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.
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