Electrochemical Concern for Biological Activity Displayed by Core–Shell Type Nanocomposites of FeFe2O4 & Ag0 Family

A. Dolynskyi, Gennadii; M. Lavrynenko, Olena; S. Krupennikova, Оksana; K. Pirskyy, Yuriy

doi:10.18576/jpac/030305

Electrochemical Concern for Biological Activity Displayed by Core–Shell Type Nanocomposites of FeFe2O4 & Ag0 Family

Document Type : Original Article

Authors

¹ Nanocomposites for Biomedicine Research Group, I. M. Frantsevich Institute for Problems of Material Science, National Academy of Sciences of Ukraine, 3 Krzhizhanovsky Street, 03680, Kyiv, Ukraine

² Materials for Electrochemical Energetics Laboratory, V.I. Vernadskii Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, 32 – 34 Palladina Avenue, 03680, Kyiv, Ukraine

10.18576/jpac/030305

Abstract

The kinetic characteristics of oxygen reduction on the surface of core–shell type nanocomposites FeFe2O4 & Ag0 are considered in the context of the certain catalytic cycle, which may occur due to electrochemical interaction between core and shell moiety. Being synthesized under different initial concentrations of Ag+ in the incubation medium, metal silver nanoclusters on the surface of magnetite core can form a layer varying from islet-like structures to aggregated spherical porous shell, thereby altering the electrocatalytic activity of the nanocomposite. Consequently, the ability for reactive oxygen species generation can be predetermined to specify potential biological activity of the nanocomposite through its interference with free radical metabolism.

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