Sustainable cathode design for electrochemical hydrogen peroxide generation using waste-derived carbon from invasive biomass

In this work, carbonaceous materials were synthesized from Phragmites australis, an invasive reed species, through hydrothermal carbonization and NaOH chemical activation, and evaluated as electrocatalysts for hydrogen peroxide (H2O2) production. The electrochemical generation of H2O2 via the two-el...

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Autores: Ramírez Vidal, Álvaro, López Rivilla, Lucía, Muñoz Morales, Martín, López Fernández, Ester, Llanos López, Javier
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/45760
Acceso en línea:https://doi.org/10.1016/j.eti.2025.104358
https://www.sciencedirect.com/science/article/pii/S235218642500344X
https://hdl.handle.net/10578/45760
Access Level:acceso abierto
Palabra clave:2-e- oxygen reduction reaction (2e-ORR)
Hydrogen peroxide
Sustainable carbon materials
Waste biomass valorization
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spelling Sustainable cathode design for electrochemical hydrogen peroxide generation using waste-derived carbon from invasive biomassRamírez Vidal, ÁlvaroLópez Rivilla, LucíaMuñoz Morales, MartínLópez Fernández, EsterLlanos López, Javier2-e- oxygen reduction reaction (2e-ORR)Hydrogen peroxideSustainable carbon materialsWaste biomass valorizationIn this work, carbonaceous materials were synthesized from Phragmites australis, an invasive reed species, through hydrothermal carbonization and NaOH chemical activation, and evaluated as electrocatalysts for hydrogen peroxide (H2O2) production. The electrochemical generation of H2O2 via the two-electron oxygen reduction reaction (2e-ORR) is gaining increasing interest as a green and decentralized approach for advanced water treatment. The impact of catalyst and polytetrafluoroethylene (PTFE) loadings on electrode performance was systematically evaluated, identifying an optimal 1:50 catalyst/PTFE ratio that achieved 438.2 mg L?¹ of H2O2 with a Faradaic efficiency of 70 %, a power consumption of 4.46 kWh kg-1, and production yield of 2.43 mg h-1cm-² after 120 min (-0.9 V vs Ag/AgCl). Morphological analyses confirmed that the optimal ratio achieved the desired hydrophobicity (contact angle greater than 120º) and uniform material distribution, which facilitated efficient mass transport at the three-phase boundary. These results improve upon those previously obtained for the same waste biomass activated with KOH and pyrolysis, both in terms of H2O2 accumulation and FE. Furthermore, they demonstrated the high transformation potential of this invasive plant biomass compared to other studies on biomass-derived carbon materials, offering a sustainable route for future environmental technologies.ELSEVIER202520252025info:eu-repo/semantics/articleapplication/pdfapplication/pdfapplication/pdfhttps://doi.org/10.1016/j.eti.2025.104358https://www.sciencedirect.com/science/article/pii/S235218642500344Xhttps://hdl.handle.net/10578/45760reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésPID2022–141265OB-I00TED2021-131810A-I00info:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/457602026-05-27T07:36:41Z
dc.title.none.fl_str_mv Sustainable cathode design for electrochemical hydrogen peroxide generation using waste-derived carbon from invasive biomass
title Sustainable cathode design for electrochemical hydrogen peroxide generation using waste-derived carbon from invasive biomass
spellingShingle Sustainable cathode design for electrochemical hydrogen peroxide generation using waste-derived carbon from invasive biomass
Ramírez Vidal, Álvaro
2-e- oxygen reduction reaction (2e-ORR)
Hydrogen peroxide
Sustainable carbon materials
Waste biomass valorization
title_short Sustainable cathode design for electrochemical hydrogen peroxide generation using waste-derived carbon from invasive biomass
title_full Sustainable cathode design for electrochemical hydrogen peroxide generation using waste-derived carbon from invasive biomass
title_fullStr Sustainable cathode design for electrochemical hydrogen peroxide generation using waste-derived carbon from invasive biomass
title_full_unstemmed Sustainable cathode design for electrochemical hydrogen peroxide generation using waste-derived carbon from invasive biomass
title_sort Sustainable cathode design for electrochemical hydrogen peroxide generation using waste-derived carbon from invasive biomass
dc.creator.none.fl_str_mv Ramírez Vidal, Álvaro
López Rivilla, Lucía
Muñoz Morales, Martín
López Fernández, Ester
Llanos López, Javier
author Ramírez Vidal, Álvaro
author_facet Ramírez Vidal, Álvaro
López Rivilla, Lucía
Muñoz Morales, Martín
López Fernández, Ester
Llanos López, Javier
author_role author
author2 López Rivilla, Lucía
Muñoz Morales, Martín
López Fernández, Ester
Llanos López, Javier
author2_role author
author
author
author
dc.subject.none.fl_str_mv 2-e- oxygen reduction reaction (2e-ORR)
Hydrogen peroxide
Sustainable carbon materials
Waste biomass valorization
topic 2-e- oxygen reduction reaction (2e-ORR)
Hydrogen peroxide
Sustainable carbon materials
Waste biomass valorization
description In this work, carbonaceous materials were synthesized from Phragmites australis, an invasive reed species, through hydrothermal carbonization and NaOH chemical activation, and evaluated as electrocatalysts for hydrogen peroxide (H2O2) production. The electrochemical generation of H2O2 via the two-electron oxygen reduction reaction (2e-ORR) is gaining increasing interest as a green and decentralized approach for advanced water treatment. The impact of catalyst and polytetrafluoroethylene (PTFE) loadings on electrode performance was systematically evaluated, identifying an optimal 1:50 catalyst/PTFE ratio that achieved 438.2 mg L?¹ of H2O2 with a Faradaic efficiency of 70 %, a power consumption of 4.46 kWh kg-1, and production yield of 2.43 mg h-1cm-² after 120 min (-0.9 V vs Ag/AgCl). Morphological analyses confirmed that the optimal ratio achieved the desired hydrophobicity (contact angle greater than 120º) and uniform material distribution, which facilitated efficient mass transport at the three-phase boundary. These results improve upon those previously obtained for the same waste biomass activated with KOH and pyrolysis, both in terms of H2O2 accumulation and FE. Furthermore, they demonstrated the high transformation potential of this invasive plant biomass compared to other studies on biomass-derived carbon materials, offering a sustainable route for future environmental technologies.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.eti.2025.104358
https://www.sciencedirect.com/science/article/pii/S235218642500344X
https://hdl.handle.net/10578/45760
url https://doi.org/10.1016/j.eti.2025.104358
https://www.sciencedirect.com/science/article/pii/S235218642500344X
https://hdl.handle.net/10578/45760
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv PID2022–141265OB-I00
TED2021-131810A-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 ELSEVIER
publisher.none.fl_str_mv ELSEVIER
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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