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Confinement Effect on Heterogeneous Electron Transfer in Aqueous Solutions inside Conducting Nanotubes
Author(s) -
Shermukhamedov Shokirbek A.,
Nazmutdinov Renat R.,
Bronshtein Michael D.,
Probst Michael
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202001569
Subject(s) - carbon nanotube , electron transfer , aqueous solution , chemical physics , materials science , electron , nanotube , solvent , redox , molecular dynamics , molecule , chemical engineering , nanotechnology , chemistry , computational chemistry , photochemistry , physics , organic chemistry , quantum mechanics , engineering , metallurgy
An Fe 3+/2+ redox couple in conducting single wall carbon nanotubes filled with water molecules is investigated in the framework of the electron transfer theory and with classical molecular dynamics simulations. The diameter of the nanotubes ranges from 0.8 nm to 3.5 nm. It can be concluded, qualitatively, that the electron transfer rate significantly increases with decreasing nanotube diameter. This effect is explained basically in terms of the solvent reorganization energy. Other factors that can affect the reaction rate are discussed as well.