Enhanced electrochemical reduction of hydrogen peroxide by Co3O4 nanowire electrode

Jeong, Wonwoo, Yin, Cui-Lei, Hui, Kwan San, Hui, Kwun Nam, Cho, Young Rae and Cho, Kyung Mox (2017) Enhanced electrochemical reduction of hydrogen peroxide by Co3O4 nanowire electrode. Journal of Materials Science: Materials in Electronics, 28 (22). 16672–16678. ISSN 0957-4522

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Abstract

Crystalline Co3O4 nanowire arrays with different morphologies grown on Ni foam were investigated by varying the reaction temperature, the concentration of precursors, and reaction time. The Co3O4 nanowires synthesized under typical reaction condition had a diameter range of approximately 500–900 nm with a length of 17 µm. Electrochemical reduction of hydrogen peroxide (H2O2) of the optimized Co3O4 nanowire electrode was studied by cyclic voltammetry. A high current density of 101.8 mA cm−2 was obtained at −0.4 V in a solution of 0.4 M H2O2 and 3.0 M NaOH at room temperature compared to 85.8 mA cm−2 at −0.35 V of the Co3O4 nanoparticle electrode. Results clearly indicated that the Ni foam supported Co3O4 nanowire electrode exhibited superior catalytic activity and mass transport kinetics for H2O2 electrochemical reduction.

Item Type: Article
Faculty \ School: Faculty of Science > School of Mathematics
Related URLs:
Depositing User: Pure Connector
Date Deposited: 25 Aug 2017 05:06
Last Modified: 11 Jun 2020 00:31
URI: https://ueaeprints.uea.ac.uk/id/eprint/64656
DOI: 10.1007/s10854-017-7579-x

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