Palladium-graphene hybrid as an electrocatalyst for hydrogen peroxide reduction
Journal
Applied Surface Science
Date Issued
2022-02
Author(s)
Čović, Jelena
Mirceski, Valentin
Zarubica, Aleksandra
Enke, Dirk
Carstens, Simon
Bojić, Aleksandar
Ranđelović, Marjan
DOI
10.1016/j.apsusc.2021.151633
Abstract
The electrocatalytic reduction of hydrogen peroxide in an alkaline solution has been studied on a hybrid material
based on hydrothermally obtained palladium particles supported on graphene (Pd@G). The morphology,
structure, and chemical composition of the prepared hybrid material, including spatial distribution of palladium
nanoparticles, were examined by SEM, XRD, EDX, elemental mapping, XPS, FTIR, and BET. The hydrogen
peroxide reduction reaction (HPRR) was studied by cyclic and square wave voltammetry in an oxygen-free and
air-saturated alkaline medium. The Pd@G exhibited pronounced electrocatalytic activity for HPRR, which
proceeds via complex electrode mechanisms coupled with adsorption phenomena and hydrogen peroxide
disproportionation reaction as a heterogeneous chemical process on the surface of palladium nanoparticles.
based on hydrothermally obtained palladium particles supported on graphene (Pd@G). The morphology,
structure, and chemical composition of the prepared hybrid material, including spatial distribution of palladium
nanoparticles, were examined by SEM, XRD, EDX, elemental mapping, XPS, FTIR, and BET. The hydrogen
peroxide reduction reaction (HPRR) was studied by cyclic and square wave voltammetry in an oxygen-free and
air-saturated alkaline medium. The Pd@G exhibited pronounced electrocatalytic activity for HPRR, which
proceeds via complex electrode mechanisms coupled with adsorption phenomena and hydrogen peroxide
disproportionation reaction as a heterogeneous chemical process on the surface of palladium nanoparticles.
Subjects
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