Electrochemistry of the aqueous ceric/cerous redox couple at conductive diamond and gold electrodes
文献信息
Sergio Ferro, Achille De Battisti
A detailed study of the electrochemical behavior of the Ce4+/3+ redox couple has been performed, in order to attempt a rationalization of the electron transfer at strongly positive potentials. Experiments have been carried out at highly boron-doped diamond (BDD) (ρ ≈ 15 mΩ cm) and polycrystalline gold, in aqueous 1 M HClO4. The influence of temperature on the electron transfer kinetics has also been investigated at both electrode materials, thus allowing a comparison that practically confirms the metal-like properties of BDD as an electrode, in spite of its being a highly doped, semi-conductor. The electron transfer rate was only slightly affected by the degree of hydrophilicity of the diamond surface. At polycrystalline gold surfaces, which are oxidized under the required experimental conditions, k0 was found to be almost one order of magnitude higher than at BDD, as a possible consequence of higher hydroxy group coverage.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.












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