A highly stable metal-organic framework-engineered Fe2S/C nanocatalyst for heterogeneous electro-Fenton treatment: validation in wastewater at mild pH

Herein, the novel application of FeS2/C nanocomposite as a highly active, stable, and recyclable catalyst for heterogeneous electro-Fenton (EF) treatment of organic water pollutants is discussed. The simultaneous carbonization and sulfidation of an iron-based metal−organic framework (MOF) yielded we...

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Autores: Ye, Zhihong, Padilla Sánchez, José Antonio, Xuriguera Martín, María Elena, Beltrán Abadia, José Luis, Alcaide Monterrubio, Francisco, Brillas, Enric, Sirés Sadornil, Ignacio
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2020
País:España
Recursos:Universidad de Barcelona
Repositório:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/161298
Acesso em linha:https://hdl.handle.net/2445/161298
Access Level:Acceso aberto
Palavra-chave:Oxidació electroquímica
Ferro
Nanopartícules
Pirites
Elèctrodes
Catàlisi
Electrolytic oxidation
Iron
Nanoparticles
Pyrites
Electrodes
Catalysis
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network_acronym_str ES
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repository_id_str
spelling A highly stable metal-organic framework-engineered Fe2S/C nanocatalyst for heterogeneous electro-Fenton treatment: validation in wastewater at mild pHYe, ZhihongPadilla Sánchez, José AntonioXuriguera Martín, María ElenaBeltrán Abadia, José LuisAlcaide Monterrubio, FranciscoBrillas, EnricSirés Sadornil, IgnacioOxidació electroquímicaFerroNanopartículesPiritesElèctrodesCatàlisiElectrolytic oxidationIronNanoparticlesPyritesElectrodesCatalysisHerein, the novel application of FeS2/C nanocomposite as a highly active, stable, and recyclable catalyst for heterogeneous electro-Fenton (EF) treatment of organic water pollutants is discussed. The simultaneous carbonization and sulfidation of an iron-based metal−organic framework (MOF) yielded well-dispersed pyrite FeS2 nanoparticles of ∼100 nm diameter linked to porous carbon. XPS analysis revealed the presence of doping N atoms. EF treatment with an IrO2/air-diffusion cell ensured the complete removal of the antidepressant fluoxetine spiked into urban wastewater at nearneutral pH after 60 min at 50 mA with 0.4 g L−1 catalyst as optimum dose. The clear enhancement of catalytic activity and stability of the material as compared to natural pyrite was evidenced, as deduced from its characterization before and after use. The final solutions contained <1.5 mg L−1 dissolved iron and became progressively acidified. Fluorescence excitation−emission spectroscopy with parallel factor analysis demonstrated the large mineralization of all wastewater components at 6 h, which was accompanied by a substantial decrease of toxicity. A mechanism with ¿OH as the dominant oxidant was proposed: FeS2 core−shell nanoparticles served as Fe2+ shuttles for homogeneous Fenton's reaction and provided active sites for the heterogeneous Fenton process, whereas nanoporous carbon allowed minimizing the mass transport limitations.American Chemical Society2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/161298Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1021/acs.est.9b07604Environmental Science & Technology, 2020, vol. 54, num. 7, p. 4664-4674https://doi.org/10.1021/acs.est.9b07604(c) American Chemical Society , 2020info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1612982026-05-27T06:46:51Z
dc.title.none.fl_str_mv A highly stable metal-organic framework-engineered Fe2S/C nanocatalyst for heterogeneous electro-Fenton treatment: validation in wastewater at mild pH
title A highly stable metal-organic framework-engineered Fe2S/C nanocatalyst for heterogeneous electro-Fenton treatment: validation in wastewater at mild pH
spellingShingle A highly stable metal-organic framework-engineered Fe2S/C nanocatalyst for heterogeneous electro-Fenton treatment: validation in wastewater at mild pH
Ye, Zhihong
Oxidació electroquímica
Ferro
Nanopartícules
Pirites
Elèctrodes
Catàlisi
Electrolytic oxidation
Iron
Nanoparticles
Pyrites
Electrodes
Catalysis
title_short A highly stable metal-organic framework-engineered Fe2S/C nanocatalyst for heterogeneous electro-Fenton treatment: validation in wastewater at mild pH
title_full A highly stable metal-organic framework-engineered Fe2S/C nanocatalyst for heterogeneous electro-Fenton treatment: validation in wastewater at mild pH
title_fullStr A highly stable metal-organic framework-engineered Fe2S/C nanocatalyst for heterogeneous electro-Fenton treatment: validation in wastewater at mild pH
title_full_unstemmed A highly stable metal-organic framework-engineered Fe2S/C nanocatalyst for heterogeneous electro-Fenton treatment: validation in wastewater at mild pH
title_sort A highly stable metal-organic framework-engineered Fe2S/C nanocatalyst for heterogeneous electro-Fenton treatment: validation in wastewater at mild pH
dc.creator.none.fl_str_mv Ye, Zhihong
Padilla Sánchez, José Antonio
Xuriguera Martín, María Elena
Beltrán Abadia, José Luis
Alcaide Monterrubio, Francisco
Brillas, Enric
Sirés Sadornil, Ignacio
author Ye, Zhihong
author_facet Ye, Zhihong
Padilla Sánchez, José Antonio
Xuriguera Martín, María Elena
Beltrán Abadia, José Luis
Alcaide Monterrubio, Francisco
Brillas, Enric
Sirés Sadornil, Ignacio
author_role author
author2 Padilla Sánchez, José Antonio
Xuriguera Martín, María Elena
Beltrán Abadia, José Luis
Alcaide Monterrubio, Francisco
Brillas, Enric
Sirés Sadornil, Ignacio
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Oxidació electroquímica
Ferro
Nanopartícules
Pirites
Elèctrodes
Catàlisi
Electrolytic oxidation
Iron
Nanoparticles
Pyrites
Electrodes
Catalysis
topic Oxidació electroquímica
Ferro
Nanopartícules
Pirites
Elèctrodes
Catàlisi
Electrolytic oxidation
Iron
Nanoparticles
Pyrites
Electrodes
Catalysis
description Herein, the novel application of FeS2/C nanocomposite as a highly active, stable, and recyclable catalyst for heterogeneous electro-Fenton (EF) treatment of organic water pollutants is discussed. The simultaneous carbonization and sulfidation of an iron-based metal−organic framework (MOF) yielded well-dispersed pyrite FeS2 nanoparticles of ∼100 nm diameter linked to porous carbon. XPS analysis revealed the presence of doping N atoms. EF treatment with an IrO2/air-diffusion cell ensured the complete removal of the antidepressant fluoxetine spiked into urban wastewater at nearneutral pH after 60 min at 50 mA with 0.4 g L−1 catalyst as optimum dose. The clear enhancement of catalytic activity and stability of the material as compared to natural pyrite was evidenced, as deduced from its characterization before and after use. The final solutions contained <1.5 mg L−1 dissolved iron and became progressively acidified. Fluorescence excitation−emission spectroscopy with parallel factor analysis demonstrated the large mineralization of all wastewater components at 6 h, which was accompanied by a substantial decrease of toxicity. A mechanism with ¿OH as the dominant oxidant was proposed: FeS2 core−shell nanoparticles served as Fe2+ shuttles for homogeneous Fenton's reaction and provided active sites for the heterogeneous Fenton process, whereas nanoporous carbon allowed minimizing the mass transport limitations.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/161298
url https://hdl.handle.net/2445/161298
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1021/acs.est.9b07604
Environmental Science & Technology, 2020, vol. 54, num. 7, p. 4664-4674
https://doi.org/10.1021/acs.est.9b07604
dc.rights.none.fl_str_mv (c) American Chemical Society , 2020
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Chemical Society , 2020
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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