Boosting the O2-to-H2O2 Selectivity Using Sn-Doped Carbon Electrocatalysts: Towards Highly Efficient Cathodes for Actual Water Decontamination

The high cost and often complex synthesis procedure of new highly selective electrocatalysts (particularly those based on noble metals) for H2O2 production are daunting obstacles to penetration of this technology into the wastewater treatment market. In this work, a simple direct thermal method has...

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Autores: Zhao, Lele, Mazzucato, Marco, Lanzalaco, Sonia, Parnigotto, Mattia, Khan, Anastassiya, Zitolo, Andrea, Cabot Julià, Pere-Lluís, Durante, Christian, Sirés Sadornil, Ignacio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/220933
Acceso en línea:https://hdl.handle.net/2445/220933
Access Level:acceso abierto
Palabra clave:Càtodes
Electrocatàlisi
Carbó
Cathodes
Electrocatalysis
Coal
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spelling Boosting the O2-to-H2O2 Selectivity Using Sn-Doped Carbon Electrocatalysts: Towards Highly Efficient Cathodes for Actual Water DecontaminationZhao, LeleMazzucato, MarcoLanzalaco, SoniaParnigotto, MattiaKhan, AnastassiyaZitolo, AndreaCabot Julià, Pere-LluísDurante, ChristianSirés Sadornil, IgnacioCàtodesElectrocatàlisiCarbóCathodesElectrocatalysisCoalThe high cost and often complex synthesis procedure of new highly selective electrocatalysts (particularly those based on noble metals) for H2O2 production are daunting obstacles to penetration of this technology into the wastewater treatment market. In this work, a simple direct thermal method has been employed to synthesize Sn-doped carbon electrocatalysts, which showed an electron transfer number of 2.04 and outstanding two-electron oxygen reduction reaction (ORR) selectivity of up to 98.0 %. Physicochemical characterization revealed that this material contains 1.53 % pyrrolic nitrogen, which is beneficial for the production of H2O2, and -C≡N functional group, which is advantageous for H+ transport. Moreover, the high volume ratio of mesopores to micropores is known to favor the quick escape of H2O2 from the electrode surface, thus minimizing its further oxidation. A purpose-made gas-diffusion electrode (GDE) was prepared, yielding 20.4 mM H2O2 under optimal electrolysis conditions. The drug diphenhydramine was selected for the first time as model organic pollutant to evaluate the performance of an electrochemical advanced oxidation process. In conventional electro-Fenton process (pH 3), complete degradation was achieved in only 15 min at 10 mA cm−2, whereas at natural pH 5.9 and 33.3 mA cm−2, almost overall drug removal was reached in 120 min.Wiley2025202520242025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion10 p.application/pdfhttps://hdl.handle.net/2445/220933Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1002/cssc.202401758ChemSusChem, 2024, vol. 18, num.3, p. e202401758https://doi.org/10.1002/cssc.202401758cc by-nc-nd (c) Zhao, Lele et al., 2024http://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2209332026-05-29T05:05:01Z
dc.title.none.fl_str_mv Boosting the O2-to-H2O2 Selectivity Using Sn-Doped Carbon Electrocatalysts: Towards Highly Efficient Cathodes for Actual Water Decontamination
title Boosting the O2-to-H2O2 Selectivity Using Sn-Doped Carbon Electrocatalysts: Towards Highly Efficient Cathodes for Actual Water Decontamination
spellingShingle Boosting the O2-to-H2O2 Selectivity Using Sn-Doped Carbon Electrocatalysts: Towards Highly Efficient Cathodes for Actual Water Decontamination
Zhao, Lele
Càtodes
Electrocatàlisi
Carbó
Cathodes
Electrocatalysis
Coal
title_short Boosting the O2-to-H2O2 Selectivity Using Sn-Doped Carbon Electrocatalysts: Towards Highly Efficient Cathodes for Actual Water Decontamination
title_full Boosting the O2-to-H2O2 Selectivity Using Sn-Doped Carbon Electrocatalysts: Towards Highly Efficient Cathodes for Actual Water Decontamination
title_fullStr Boosting the O2-to-H2O2 Selectivity Using Sn-Doped Carbon Electrocatalysts: Towards Highly Efficient Cathodes for Actual Water Decontamination
title_full_unstemmed Boosting the O2-to-H2O2 Selectivity Using Sn-Doped Carbon Electrocatalysts: Towards Highly Efficient Cathodes for Actual Water Decontamination
title_sort Boosting the O2-to-H2O2 Selectivity Using Sn-Doped Carbon Electrocatalysts: Towards Highly Efficient Cathodes for Actual Water Decontamination
dc.creator.none.fl_str_mv Zhao, Lele
Mazzucato, Marco
Lanzalaco, Sonia
Parnigotto, Mattia
Khan, Anastassiya
Zitolo, Andrea
Cabot Julià, Pere-Lluís
Durante, Christian
Sirés Sadornil, Ignacio
author Zhao, Lele
author_facet Zhao, Lele
Mazzucato, Marco
Lanzalaco, Sonia
Parnigotto, Mattia
Khan, Anastassiya
Zitolo, Andrea
Cabot Julià, Pere-Lluís
Durante, Christian
Sirés Sadornil, Ignacio
author_role author
author2 Mazzucato, Marco
Lanzalaco, Sonia
Parnigotto, Mattia
Khan, Anastassiya
Zitolo, Andrea
Cabot Julià, Pere-Lluís
Durante, Christian
Sirés Sadornil, Ignacio
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Càtodes
Electrocatàlisi
Carbó
Cathodes
Electrocatalysis
Coal
topic Càtodes
Electrocatàlisi
Carbó
Cathodes
Electrocatalysis
Coal
description The high cost and often complex synthesis procedure of new highly selective electrocatalysts (particularly those based on noble metals) for H2O2 production are daunting obstacles to penetration of this technology into the wastewater treatment market. In this work, a simple direct thermal method has been employed to synthesize Sn-doped carbon electrocatalysts, which showed an electron transfer number of 2.04 and outstanding two-electron oxygen reduction reaction (ORR) selectivity of up to 98.0 %. Physicochemical characterization revealed that this material contains 1.53 % pyrrolic nitrogen, which is beneficial for the production of H2O2, and -C≡N functional group, which is advantageous for H+ transport. Moreover, the high volume ratio of mesopores to micropores is known to favor the quick escape of H2O2 from the electrode surface, thus minimizing its further oxidation. A purpose-made gas-diffusion electrode (GDE) was prepared, yielding 20.4 mM H2O2 under optimal electrolysis conditions. The drug diphenhydramine was selected for the first time as model organic pollutant to evaluate the performance of an electrochemical advanced oxidation process. In conventional electro-Fenton process (pH 3), complete degradation was achieved in only 15 min at 10 mA cm−2, whereas at natural pH 5.9 and 33.3 mA cm−2, almost overall drug removal was reached in 120 min.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/220933
url https://hdl.handle.net/2445/220933
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1002/cssc.202401758
ChemSusChem, 2024, vol. 18, num.3, p. e202401758
https://doi.org/10.1002/cssc.202401758
dc.rights.none.fl_str_mv cc by-nc-nd (c) Zhao, Lele et al., 2024
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc by-nc-nd (c) Zhao, Lele et al., 2024
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 10 p.
application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869414550192783360
score 15,811543

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