Activation pathways taking place at molecular copper precatalysts for the oxygen evolution reaction

C.J.M. van der Ham, F. Işık, T.W.G.M. Verhoeven, J.W. Niemantsverdriet, D.G.H. Hetterscheid

Research output: Contribution to journalArticleAcademicpeer-review

13 Citations (Scopus)
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Abstract

The activation processes of [CuII(bdmpza)2] in the water oxidation reaction were investigated using cyclic voltammetry and chronoamperometry. Two different paths wherein CuO is formed were distinguished. [CuII(bdmpza)2] can be oxidized at high potentials to form CuO, which was observed by a slight increase in catalytic current over time. When [CuII(bdmpza)2] is initially reduced at low potentials, a more active water oxidation catalyst is generated, yielding high catalytic currents from the moment a sufficient potential is applied. This work highlights the importance of catalyst pre-treatment and the choice of the experimental conditions in water oxidation catalysis using copper complexes.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalCatalysis Today
Volume290
Issue number15 July 2017
DOIs
Publication statusPublished - 15 Jul 2017

Keywords

  • Catalyst activation
  • Copper oxide
  • Water oxidation

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