Mathematical modeling and numerical simulation of metal nanoparticles electrooxidation |
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Authors: | Khiena Z Brainina Leonid G Galperin Aleksandr L Galperin |
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Institution: | (1) Ural State University of Economics, 8 Marta St, 62, Yekaterinburg, 620219, Russia;(2) Institute of Medical Cell Technologies, Soboleva St, 25, Yekaterinburg, 620095, Russia;(3) Ural State Technical University – UPI, Mira st., 19, A-203, Yekaterinburg, 620002, Russia;(4) Ural State University, Lenin Avenue 51, Yekaterinburg, 620083, Russia |
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Abstract: | A mathematical model is proposed that describes the processes of electrooxidation of metal nanoparticles localized on the
surface of an indifferent macroelectrode. In contrast to previously proposed models based on geometric factors (shapes of
particles and diffusion zones), the proposed model has introduced thermodynamic considerations which take into account the
energy differences between the nanoparticle ensembles from microparticles and macroparticles. A series of voltammograms was
obtained as a result of calculations and characteristic relationships between the different parameters were found. An analysis
of the findings, on the one hand, predicts the shape and characteristic features of the experimental voltammograms and, on
the other hand, provides information regarding energetic properties of the nanoparticles. |
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