Activated Nickel Foam Anodes for Sustainable Biomass Valorization: Competitive Oxidation of Organic Molecules vs the Oxygen Evolution

A systematic study on the competitive oxidation of glucose (Glc), xylose (Xyl), and 5-hydroxymethylfurfural (HMF) vs the oxygen evolution reaction (OER) was performed by coupling H-cell electrochemical experiments with in situ O2 monitoring in the anodic chamber using an activated Ni foam as the ano...

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Autores: Crisafulli, Rudy, Garduño Ibarra, Itzcoatl Rafael, Kilaparthi, Sravan Kumar, Sánchez Paredes, Paula, Lucas Consuegra, Antonio de
Formato: artículo
Fecha de publicación:2026
País:España
Recursos:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/47624
Acesso em linha:https://doi.org/10.1021/acs.energyfuels.5c05778
https://hdl.handle.net/10578/47624
Access Level:acceso abierto
Palavra-chave:Added value chemicals
Biomass electrolysis
Electrochemical reforming
Glucose oxidation
Hydrogen
Membrane-less electrolysis
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spelling Activated Nickel Foam Anodes for Sustainable Biomass Valorization: Competitive Oxidation of Organic Molecules vs the Oxygen EvolutionCrisafulli, RudyGarduño Ibarra, Itzcoatl RafaelKilaparthi, Sravan KumarSánchez Paredes, PaulaLucas Consuegra, Antonio deAdded value chemicalsBiomass electrolysisElectrochemical reformingGlucose oxidationHydrogenMembrane-less electrolysisA systematic study on the competitive oxidation of glucose (Glc), xylose (Xyl), and 5-hydroxymethylfurfural (HMF) vs the oxygen evolution reaction (OER) was performed by coupling H-cell electrochemical experiments with in situ O2 monitoring in the anodic chamber using an activated Ni foam as the anode. At a substrate concentration of 10 mM, multipotential steps showed similar OER onset potential values for Glc and Xyl (1.49 VRHE), while the value for HMF was slightly lower (1.47 VRHE). Chronoamperometry tests at 1.6 VRHE (30 min) with varying concentrations showed that both Glc and Xyl oxidation reactions fully suppressed the OER at 30 mM, while 100 mM was required for HMF. A Langmuir–Hinshelwood analysis of the current–substrate concentration dependence revealed the slower kinetics and inhibitory effects impacting HMF oxidation, which account for the significant difference in performance with respect to both aldoses. Given its relevance as both a model and a promising substrate for membraneless electrolysis operation, Glc was further investigated in a long-term chronoamperometry experiment with in situ O2 monitoring (15 h at 1.6 VRHE, 30 mM Glc). The results suggested the feasibility of sustaining OER-free operational conditions for approximately 4 h from an initial Glc concentration of 100 mM. HPLC analysis indicated the presence of formate as the main coproduct of hydrogen via glucose electrolysis.AMER CHEMICAL SOC202620262026info:eu-repo/semantics/articleapplication/pdfapplication/pdfapplication/pdfhttps://doi.org/10.1021/acs.energyfuels.5c05778https://hdl.handle.net/10578/47624reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésEIC-2021-PATHFINDERCHALLENGES-01-04PID2022-142502OB-I00info:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/476242026-05-27T07:36:41Z
dc.title.none.fl_str_mv Activated Nickel Foam Anodes for Sustainable Biomass Valorization: Competitive Oxidation of Organic Molecules vs the Oxygen Evolution
title Activated Nickel Foam Anodes for Sustainable Biomass Valorization: Competitive Oxidation of Organic Molecules vs the Oxygen Evolution
spellingShingle Activated Nickel Foam Anodes for Sustainable Biomass Valorization: Competitive Oxidation of Organic Molecules vs the Oxygen Evolution
Crisafulli, Rudy
Added value chemicals
Biomass electrolysis
Electrochemical reforming
Glucose oxidation
Hydrogen
Membrane-less electrolysis
title_short Activated Nickel Foam Anodes for Sustainable Biomass Valorization: Competitive Oxidation of Organic Molecules vs the Oxygen Evolution
title_full Activated Nickel Foam Anodes for Sustainable Biomass Valorization: Competitive Oxidation of Organic Molecules vs the Oxygen Evolution
title_fullStr Activated Nickel Foam Anodes for Sustainable Biomass Valorization: Competitive Oxidation of Organic Molecules vs the Oxygen Evolution
title_full_unstemmed Activated Nickel Foam Anodes for Sustainable Biomass Valorization: Competitive Oxidation of Organic Molecules vs the Oxygen Evolution
title_sort Activated Nickel Foam Anodes for Sustainable Biomass Valorization: Competitive Oxidation of Organic Molecules vs the Oxygen Evolution
dc.creator.none.fl_str_mv Crisafulli, Rudy
Garduño Ibarra, Itzcoatl Rafael
Kilaparthi, Sravan Kumar
Sánchez Paredes, Paula
Lucas Consuegra, Antonio de
author Crisafulli, Rudy
author_facet Crisafulli, Rudy
Garduño Ibarra, Itzcoatl Rafael
Kilaparthi, Sravan Kumar
Sánchez Paredes, Paula
Lucas Consuegra, Antonio de
author_role author
author2 Garduño Ibarra, Itzcoatl Rafael
Kilaparthi, Sravan Kumar
Sánchez Paredes, Paula
Lucas Consuegra, Antonio de
author2_role author
author
author
author
dc.subject.none.fl_str_mv Added value chemicals
Biomass electrolysis
Electrochemical reforming
Glucose oxidation
Hydrogen
Membrane-less electrolysis
topic Added value chemicals
Biomass electrolysis
Electrochemical reforming
Glucose oxidation
Hydrogen
Membrane-less electrolysis
description A systematic study on the competitive oxidation of glucose (Glc), xylose (Xyl), and 5-hydroxymethylfurfural (HMF) vs the oxygen evolution reaction (OER) was performed by coupling H-cell electrochemical experiments with in situ O2 monitoring in the anodic chamber using an activated Ni foam as the anode. At a substrate concentration of 10 mM, multipotential steps showed similar OER onset potential values for Glc and Xyl (1.49 VRHE), while the value for HMF was slightly lower (1.47 VRHE). Chronoamperometry tests at 1.6 VRHE (30 min) with varying concentrations showed that both Glc and Xyl oxidation reactions fully suppressed the OER at 30 mM, while 100 mM was required for HMF. A Langmuir–Hinshelwood analysis of the current–substrate concentration dependence revealed the slower kinetics and inhibitory effects impacting HMF oxidation, which account for the significant difference in performance with respect to both aldoses. Given its relevance as both a model and a promising substrate for membraneless electrolysis operation, Glc was further investigated in a long-term chronoamperometry experiment with in situ O2 monitoring (15 h at 1.6 VRHE, 30 mM Glc). The results suggested the feasibility of sustaining OER-free operational conditions for approximately 4 h from an initial Glc concentration of 100 mM. HPLC analysis indicated the presence of formate as the main coproduct of hydrogen via glucose electrolysis.
publishDate 2026
dc.date.none.fl_str_mv 2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.1021/acs.energyfuels.5c05778
https://hdl.handle.net/10578/47624
url https://doi.org/10.1021/acs.energyfuels.5c05778
https://hdl.handle.net/10578/47624
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv EIC-2021-PATHFINDERCHALLENGES-01-04
PID2022-142502OB-I00
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv AMER CHEMICAL SOC
publisher.none.fl_str_mv AMER CHEMICAL SOC
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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