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 |
|---|---|
| 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
- copper electrocatalysis
- homogeneous electrocatalysis
- OER
- oxygen-evolution reaction
- water-oxidation catalysis
ASJC Scopus subject areas
- Catalysis
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Cite this
Fisher, K. J., Materna, K. L., Mercado, B. Q., Crabtree, R. H., & Brudvig, G. W. (2017). Electrocatalytic Water Oxidation by a Copper(II) Complex of an Oxidation-Resistant Ligand. ACS Catalysis, 7(5), 3384-3387. https://doi.org/10.1021/acscatal.7b00494