Manganese oxide-functionalized graphene sponge electrodes for electrochemical chlorine-free disinfection of tap water

Low-cost reduced graphene oxide sponges functionalized with manganese oxide were used as electrodes for the disinfection of Escherichia coli in water. Manganese oxide was doped with amino groups (MnxOyNH2) to strengthen the bond with the graphene coating and improve the electrochemical stability of...

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Detalles Bibliográficos
Autores: Segues Codina, Anna, Sergienko, Natalia, Borrego i Moré, Carles, Radjenovic, Jelena
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2023
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:10256/25459
Acceso en línea:http://hdl.handle.net/10256/25459
Access Level:acceso embargado
Palabra clave:Aigua -- Depuració
Water -- Purification
Aigua potable -- Depuració
Drinking water -- Purification
Òxids de manganès
Manganese oxides
Oxidació electrolítica
Electrolytic oxidation
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spelling Manganese oxide-functionalized graphene sponge electrodes for electrochemical chlorine-free disinfection of tap waterSegues Codina, AnnaSergienko, NataliaBorrego i Moré, CarlesRadjenovic, JelenaAigua -- DepuracióWater -- PurificationAigua potable -- DepuracióDrinking water -- PurificationÒxids de manganèsManganese oxidesOxidació electrolíticaElectrolytic oxidationLow-cost reduced graphene oxide sponges functionalized with manganese oxide were used as electrodes for the disinfection of Escherichia coli in water. Manganese oxide was doped with amino groups (MnxOyNH2) to strengthen the bond with the graphene coating and improve the electrochemical stability of the sponge. The Mn II and Mn III incorporated into the graphene coating favored the formation of oxygen vacancies and enhanced the electric and catalytic properties of the anode. Electrooxidation of real tap water at 29 A/m−2 resulted in 2.2 log removal of E. coli. After storing the treated samples for 18 h at 25 and 37 °C, the removal of E. coli increased to 3.3 and 4.6 log, respectively, demonstrating the irreparable damage to the bacterial cells via low-voltage electroporation, and the key role of storage temperature in their further inactivation. The energy consumption of the system treating real low conductivity tap water was 1.2–1.6 kWh m−3. Finally, experiments with intermittent current suggest the contribution of the pseudo-capacitance of the graphene sponge to electrochemical disinfection during the OFF periods. This study demonstrates the feasibility of manganese oxide-functionalized graphene sponges for the chlorine-free disinfection of water.The authors would like to acknowledge ERC Starting Grant project ELECTRON4WATER (Three-dimensional nanoelectrochemical systems based on low-cost reduced graphene oxide: the next generation of water treatment systems) [project number 714177]. ICRA researchers thank funding from CERCA program and the support from the Economy and Knowledge Department of the Catalan Government through the Consolidated Research Group program to [ICRA-TECH – 2021 SGR 0128] and [2021 SGR 01282 ICRA-ENV]6ElsevierEuropean Commissioninfo2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionpeer-reviewedapplication/pdfhttp://hdl.handle.net/10256/25459http://hdl.handle.net/10256/25459© Chemical Engineering Journal, vol. 472, art. núm. 145082Articles publicats (ICRA)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2023.145082info:eu-repo/semantics/altIdentifier/issn/1385-8947info:eu-repo/semantics/altIdentifier/eissn/1873-3212info:eu-repo/grantAgreement/EC/H2020/714177Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/embargoedAccessoai:recercat.cat:10256/254592026-05-29T05:05:01Z
dc.title.none.fl_str_mv Manganese oxide-functionalized graphene sponge electrodes for electrochemical chlorine-free disinfection of tap water
title Manganese oxide-functionalized graphene sponge electrodes for electrochemical chlorine-free disinfection of tap water
spellingShingle Manganese oxide-functionalized graphene sponge electrodes for electrochemical chlorine-free disinfection of tap water
Segues Codina, Anna
Aigua -- Depuració
Water -- Purification
Aigua potable -- Depuració
Drinking water -- Purification
Òxids de manganès
Manganese oxides
Oxidació electrolítica
Electrolytic oxidation
title_short Manganese oxide-functionalized graphene sponge electrodes for electrochemical chlorine-free disinfection of tap water
title_full Manganese oxide-functionalized graphene sponge electrodes for electrochemical chlorine-free disinfection of tap water
title_fullStr Manganese oxide-functionalized graphene sponge electrodes for electrochemical chlorine-free disinfection of tap water
title_full_unstemmed Manganese oxide-functionalized graphene sponge electrodes for electrochemical chlorine-free disinfection of tap water
title_sort Manganese oxide-functionalized graphene sponge electrodes for electrochemical chlorine-free disinfection of tap water
dc.creator.none.fl_str_mv Segues Codina, Anna
Sergienko, Natalia
Borrego i Moré, Carles
Radjenovic, Jelena
author Segues Codina, Anna
author_facet Segues Codina, Anna
Sergienko, Natalia
Borrego i Moré, Carles
Radjenovic, Jelena
author_role author
author2 Sergienko, Natalia
Borrego i Moré, Carles
Radjenovic, Jelena
author2_role author
author
author
dc.contributor.none.fl_str_mv European Commission
dc.subject.none.fl_str_mv Aigua -- Depuració
Water -- Purification
Aigua potable -- Depuració
Drinking water -- Purification
Òxids de manganès
Manganese oxides
Oxidació electrolítica
Electrolytic oxidation
topic Aigua -- Depuració
Water -- Purification
Aigua potable -- Depuració
Drinking water -- Purification
Òxids de manganès
Manganese oxides
Oxidació electrolítica
Electrolytic oxidation
description Low-cost reduced graphene oxide sponges functionalized with manganese oxide were used as electrodes for the disinfection of Escherichia coli in water. Manganese oxide was doped with amino groups (MnxOyNH2) to strengthen the bond with the graphene coating and improve the electrochemical stability of the sponge. The Mn II and Mn III incorporated into the graphene coating favored the formation of oxygen vacancies and enhanced the electric and catalytic properties of the anode. Electrooxidation of real tap water at 29 A/m−2 resulted in 2.2 log removal of E. coli. After storing the treated samples for 18 h at 25 and 37 °C, the removal of E. coli increased to 3.3 and 4.6 log, respectively, demonstrating the irreparable damage to the bacterial cells via low-voltage electroporation, and the key role of storage temperature in their further inactivation. The energy consumption of the system treating real low conductivity tap water was 1.2–1.6 kWh m−3. Finally, experiments with intermittent current suggest the contribution of the pseudo-capacitance of the graphene sponge to electrochemical disinfection during the OFF periods. This study demonstrates the feasibility of manganese oxide-functionalized graphene sponges for the chlorine-free disinfection of water.
publishDate 2023
dc.date.none.fl_str_mv 2023
info
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
peer-reviewed
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/25459
http://hdl.handle.net/10256/25459
url http://hdl.handle.net/10256/25459
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2023.145082
info:eu-repo/semantics/altIdentifier/issn/1385-8947
info:eu-repo/semantics/altIdentifier/eissn/1873-3212
info:eu-repo/grantAgreement/EC/H2020/714177
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv © Chemical Engineering Journal, vol. 472, art. núm. 145082
Articles publicats (ICRA)
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
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score 15,81155

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