Mathematical model representing a catalytic effect
of a nanocrystal mixture of metallic platinum and
ruthenium dioxide for electrooxidation of methanol
is established. Dependance of a current density of
the methanol electrooxidation on the chemical
composition and size of nanocrystals is determined
in the model. A good agreement between theoretical
values and experimental results corroborates that
electrooxidation of methanol is guided by a
bifunctional mechanism. The model is based on the fact that the catalytic effect is proportional to the length of the contact border
between nanocrystals of metallic platinum and nanocrystals of ruthenium dioxide. Ru-OH particles are formed on the Ru atoms at the
border of crystal grains, at potentials more negative than on platinum. These species oxidize firmly bound intermediates COad located
on the adjacent Pt atoms and thus release the Pt atoms for adsorption and dehydrogenation of subsequent molecules of methanol.
TY - JOUR
AU - Spasojević, Milica
AU - Marko, Dušan
AU - Spasojević, Miroslav
PY - 2022
UR - http://cherry.chem.bg.ac.rs/handle/123456789/5898
AB - Mathematical model representing a catalytic effect
of a nanocrystal mixture of metallic platinum and
ruthenium dioxide for electrooxidation of methanol
is established. Dependance of a current density of
the methanol electrooxidation on the chemical
composition and size of nanocrystals is determined
in the model. A good agreement between theoretical
values and experimental results corroborates that
electrooxidation of methanol is guided by a
bifunctional mechanism. The model is based on the fact that the catalytic effect is proportional to the length of the contact border
between nanocrystals of metallic platinum and nanocrystals of ruthenium dioxide. Ru-OH particles are formed on the Ru atoms at the
border of crystal grains, at potentials more negative than on platinum. These species oxidize firmly bound intermediates COad located
on the adjacent Pt atoms and thus release the Pt atoms for adsorption and dehydrogenation of subsequent molecules of methanol.
T2 - Revue Roumaine de Chimie
T1 - Mathematical model of electrocatalysis of methanol oxidation at the mixture of nanocrystals of platinum and ruthenium dioxide
IS - 67
SP - 473
SP - 482
DO - 10.33224/rrch.2022.67.8-9.06
ER -
@article{
author = "Spasojević, Milica and Marko, Dušan and Spasojević, Miroslav",
year = "2022",
abstract = "Mathematical model representing a catalytic effect
of a nanocrystal mixture of metallic platinum and
ruthenium dioxide for electrooxidation of methanol
is established. Dependance of a current density of
the methanol electrooxidation on the chemical
composition and size of nanocrystals is determined
in the model. A good agreement between theoretical
values and experimental results corroborates that
electrooxidation of methanol is guided by a
bifunctional mechanism. The model is based on the fact that the catalytic effect is proportional to the length of the contact border
between nanocrystals of metallic platinum and nanocrystals of ruthenium dioxide. Ru-OH particles are formed on the Ru atoms at the
border of crystal grains, at potentials more negative than on platinum. These species oxidize firmly bound intermediates COad located
on the adjacent Pt atoms and thus release the Pt atoms for adsorption and dehydrogenation of subsequent molecules of methanol.",
journal = "Revue Roumaine de Chimie",
title = "Mathematical model of electrocatalysis of methanol oxidation at the mixture of nanocrystals of platinum and ruthenium dioxide",
number = "67",
pages = "473-482",
doi = "10.33224/rrch.2022.67.8-9.06"
}
Spasojević, M., Marko, D.,& Spasojević, M.. (2022). Mathematical model of electrocatalysis of methanol oxidation at the mixture of nanocrystals of platinum and ruthenium dioxide. in Revue Roumaine de Chimie(67), 473.
https://doi.org/10.33224/rrch.2022.67.8-9.06
Spasojević M, Marko D, Spasojević M. Mathematical model of electrocatalysis of methanol oxidation at the mixture of nanocrystals of platinum and ruthenium dioxide. in Revue Roumaine de Chimie. 2022;(67):473.
doi:10.33224/rrch.2022.67.8-9.06 .
Spasojević, Milica, Marko, Dušan, Spasojević, Miroslav, "Mathematical model of electrocatalysis of methanol oxidation at the mixture of nanocrystals of platinum and ruthenium dioxide" in Revue Roumaine de Chimie, no. 67 (2022):473,
https://doi.org/10.33224/rrch.2022.67.8-9.06 . .
