Título:
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A million Turnover Molecular Anode for Catalytic Water Oxidation
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Autor/a:
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Creus, Jordi; Matheu, Roc; Peñafiel, Itziar; Moonshiram, Dooshaye; Blondeau, Pascal; Benet-Buchholz,Jprdi; García-Antón, Jordi; Sala, Xavier; Godard, Cyril; Llobet, Antoni
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Abstract:
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Molecular ruthenium-based water oxidation catalyst precursors of general formula [Ru(tda)(Li)2] (tda2− is [2,2′:6′,2′′-terpyridine]-6,6′′-dicarboxylato; L1=4-(pyren-1-yl)-N-(pyridin-4-ylmethyl)butanamide, 1 b; L2=4-(pyren-1-yl)pyridine), 1 c), have been prepared and thoroughly characterized. Both complexes contain a pyrene group allowing ready and efficiently anchoring via π interactions on multi-walled carbon nanotubes (MWCNT). These hybrid solid state materials are exceptionally stable molecular water-oxidation anodes capable of carrying out more than a million turnover numbers (TNs) at pH 7 with an Eapp=1.45 V vs. NHE without any sign of degradation. XAS spectroscopy analysis before, during, and after catalysis together with electrochemical techniques allow their unprecedented oxidative ruggedness to be monitored and verified. |
Fecha de creación:
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2016 |
Materia(s):
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electrocatalysis redox properties transition metal complexes water oxidaton catalysis water splitting |
Derechos:
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© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
Tipo de documento:
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Artículo |
DOI:
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https://dx.doi.org/10.1002/anie.201609167
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Editor:
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Wiley
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Publish at:
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Angew.Chem.Int. Ed.
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Compartir:
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