Abstract
The copper(II) complex Cu(pyalk)2 (pyalk = 2-pyridyl-2-propanoate) is a robust homogeneous water-oxidation electrocatalyst under basic conditions (pH > 10.4). Water oxidation occurs at a relatively low overpotential for copper of 520-580 mV with a turnover frequency of ∼0.7 s-1. Controlled potential electrolysis experiments over 12 h at 1.1 V vs NHE resulted in the formation of >30 catalytic turnovers of O2 with only ∼20% catalyst degradation. The robustness of the catalyst under fairly harsh conditions and the low overpotential further highlight the oxidation resistance and strong donor character of pyalk.
Original language | English |
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Pages (from-to) | 3384-3387 |
Number of pages | 4 |
Journal | ACS Catalysis |
Volume | 7 |
Issue number | 5 |
DOIs | |
Publication status | Published - May 5 2017 |
Keywords
- OER
- copper electrocatalysis
- homogeneous electrocatalysis
- oxygen-evolution reaction
- water-oxidation catalysis
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)