Mass transport effects in CO bulk electrooxidation on Ptnanoparticles supported on vertically aligned carbon nanofilaments
Literature Information
Pavel S. Ruvinskiy, Antoine Bonnefont, Maryam Bayati, Elena R. Savinova
In this work we report on the influence of the catalytic layer architecture on the autocatalytic reaction of CO-bulk oxidation in liquid electrolyte by employing two types of nanomaterials: 2D arrays of Pt particles prepared on the surface of glassy carbon by colloidal lithography and 3D arrays of Pt nanoparticles supported on vertically aligned carbon nanofilaments. Oxidation of dissolved CO is studied experimentally using RDE approach and computationally using finite element method. For the first time, the influence of 3D architecture of the electrode on a complex bistable electrochemical system was investigated. The modelling results are in qualitative agreement with the experiment and explain the influence of nanostructure of the electrodes on such key characteristics of CO electrooxidation as the ignition potential, the width and the shape of the bistability region, and the value of the limiting current. Analysis of the experimental RDE curves suggests spontaneous formation of active and passive reaction zones along the fibre length which is supported by modelling.
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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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