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Electrocatalytic reduction of Molecular Oxygen with a Copper (II) Coordination Polymer
Author(s) -
Kamyabi Mohammad Ali,
SoleymaniBonoti Fatemeh,
Taheri Leila,
Morsali Ahmad,
HosseiniMonfared Hassan
Publication year - 2020
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5562
Subject(s) - chemistry , hydrogen peroxide , electron transfer , inorganic chemistry , catalysis , aqueous solution , photochemistry , reaction rate constant , copper , cyclic voltammetry , oxygen , electrochemistry , kinetics , organic chemistry , electrode , quantum mechanics , physics
Oxygen reduction at the polarized water/1,2‐dichloroethane (DCE) interface catalyzed by a Cu (II) coordination polymer (Cu–pol) was studied with two lipophilic electron donors ferrocene (Fc) and tetrathiafulvalene (TTF). The results of the ion transfer voltammetry and two‐phase shake flask experiments suggest proceeding of the catalytic reaction as proton‐coupled electron transfer reduction of oxygen to hydrogen peroxide and water. In this process, while the protons supplied from the aqueous phase, the electrons provided from the organic phase by the weak electron donor, Fc. The O 2 molecule takes a superoxide structure with Cu–pol which resulted to hydrogen peroxide or water on reduction. Furthermore, the results revealed that the apparent rate constant of TTF + Cu‐pol is higher than that of Fc + Cu‐pol system due to the faster kinetic reaction of TTF with respect to Fc.