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Mechanistic Investigation of Biomass Oxidation Using Nickel Oxide Nanoparticles in a CO2-Saturated Electrolyte for Paired Electrolysis

Choi, Seungwoo, Balamurugan, Mani, Lee, Kang-Gyu, Cho, Kang Hee, Park, Sunghak, Seo, Hongmin, Nam, Ki Tae·2020·The Journal of Physical Chemistry Letters

Abstract

A highly efficient CO 2 electrolysis system could be created by introducing biomass oxidation as an alternative anodic reaction to the sluggish oxygen evolution reaction in a CO 2 -saturated and near-neutral electrolyte. Here, we successfully demonstrate anodic biomass oxidation by synthesizing 5 nm nickel oxide nanoparticles (NiO NPs). NiO NPs show a unique electrocatalytic activity for 5-hydroxymethylfurfural (HMF) oxidation under near-neutral conditions, exhibiting an anodic current onset (1 mA cm –2 ) at 1.524 V versus the reversible hydrogen electrode and a total Faradaic efficiency of ≤70%. Electrokinetic and in situ ultraviolet–visible spectroscopic analyses suggest that a redox active nickel hydroxide species is formed on the surface of NiO electrocatalysts during HMF oxidation, and this oxidation of Ni(II) hydroxide to Ni(III) oxyhydroxide could be the rate-determining step. This mechanistic study of biomass oxidation in a CO 2 -saturated electrolyte provides insight into constructing a highly efficient system for the paired electrolysis of CO 2 reduction and biomass oxidation.

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Metadata

Authors
Choi, S., Balamurugan, M., Lee, K.-G., Cho, K. H., Park, S., Seo, H., & Nam, K. T.
Venue
The Journal of Physical Chemistry Letters
Published
2020-03-29
Volume
11
Issue
8
Pages
2941-2948
ISSN
1948-7185 (ISSN-L)
OpenAlex
W3013777139
Cited by
164
References
7
FWCI
3.95
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Mechanistic Investigation of Biomass Oxidation Using Nickel Oxide Nanoparticles in a CO2-Saturated Electrolyte for Paired Electrolysis. https://app.cochat.ai/papers/10.1021/acs.jpclett.0c00425
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Choi, S., Balamurugan, M., Lee, K.-G., Cho, K. H., Park, S., Seo, H., & Nam, K. T. (2020). Mechanistic Investigation of Biomass Oxidation Using Nickel Oxide Nanoparticles in a CO2-Saturated Electrolyte for Paired Electrolysis. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/acs.jpclett.0c00425

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