期刊
INORGANIC CHEMISTRY
卷 51, 期 16, 页码 8890-8896出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic300886s
关键词
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资金
- Robert A. Welch Foundation [E-680]
- Natural Science Foundation of China [21071067, 21001054]
Five meso-substituted cobalt(III) corroles were examined as to their catalytic activity for the electoreduction of O-2 when coated on an edge-plane pyrolytic graphite electrode in 1.0 M HClO4. The investigated compounds are represented as (TpRPCor)Co(PPh3), where TpRPCor is the trianion of a para-substituted triphenylcorrole and R = OMe, Me, H, F, or Cl. Three electrochemical techniques, cyclic voltammetry, linear sweep voltammetry with a rotating disk electrode (RDE), and voltammetry at a rotating ring disk electrode (RRDE), were utilized to evaluate the catalytic activity of the corroles in the reduction of O-2. Cobalt corroles containing electron-withdrawing substituents were shown to be better catalysts than those having electron-donating groups on the three meso-phenyl rings of the triarylcorroles.
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