Ethanol electro-oxidation on platinum in alkaline media

Literature Information

Publication Date 2009-09-24
DOI 10.1039/B913170A
Impact Factor 3.676
Authors

Stanley C. S. Lai, Marc T. M. Koper


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Abstract

The electrochemical oxidation of ethanol as well as its irreversible adsorption on platinum single crystal electrodes has been studied in an alkaline solution. In addition, the adsorbed species in the ethanol oxidation reaction were also studied by means of surface enhanced Raman spectroscopy (SERS) on a platinum film electrode. It was found that the oxidation of ethanol is very sensitive to the electrode surface structure: a higher concentration of low-coordination sites increases the current, lowers the overpotential required and lowers the deactivation rate. Furthermore, the terrace length also affects the amounts and the nature of the adsorbed species: on Pt (110), only COad was observed, whereas adsorbed CHx could only be found on electrode surfaces with (111) terrace sites. Based on the results here, a model for the ethanol electro-oxidation reaction in alkaline media is presented, and the differences with the same reaction in acidic media are pointed out.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

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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