Wireless pulsed nanophotoelectrochemical cell for the ultrafast degradation of organic pollutants

An urgent demand exists for advanced-technologies to efficiently remove persistent organic pollutants from water, while minimizing energy consumption. Here, we introduce an innovative wireless nanophotoelectrochemical (nPEC) cell using pulsed light for the ultrafast degradation/mineralization of org...

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Authors: Serrà i Ramos, Albert, Gómez, Elvira, Al Hoda al Bast, Nour, Zhang, Yue, Duque, Marcos, Esplandiu, María J., Esteve, Jaume, Nogués, Josep, Sepúlveda, Borja
Format: article
Status:Published version
Publication Date:2024
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/216276
Online Access:https://hdl.handle.net/2445/216276
Access Level:Open access
Keyword:Depuració de l'aigua
Antibiòtics
Nanotecnologia
Water purification
Antibiotics
Nanotechnology
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spelling Wireless pulsed nanophotoelectrochemical cell for the ultrafast degradation of organic pollutantsSerrà i Ramos, AlbertGómez, ElviraAl Hoda al Bast, NourZhang, YueDuque, MarcosEsplandiu, María J.Esteve, JaumeNogués, JosepSepúlveda, BorjaDepuració de l'aiguaAntibiòticsNanotecnologiaWater purificationAntibioticsNanotechnologyAn urgent demand exists for advanced-technologies to efficiently remove persistent organic pollutants from water, while minimizing energy consumption. Here, we introduce an innovative wireless nanophotoelectrochemical (nPEC) cell using pulsed light for the ultrafast degradation/mineralization of organic pollutants. The nPEC cell comprises a nanostructured Si-pn photodiode that monolithically integrates: (i) a Si-n/Au nanowire-based-photocathode for effective light absorption and photovoltage generation, and (ii) a Si-p/mesoporous-NiPt photoanode serving as catalyst to wirelessly amplify the sulfate radical production by low-intensity light without any bias voltage. The efficacy of the nPEC cell was shown by ultrafast degradation (>99 %) and mineralization (>98 %) of three emerging pollutants (tetracycline, levofloxacin and anatoxin-A). Notably, reaction kinetics were boosted by more than one order of magnitude when exposed to light intensities ca. 5-fold lower than sunlight. Remarkably, pulsed light beams in the 100–500 Hz range provided an additional enhancement in the degradation/mineralization efficiencies, reducing energy-input by half, while enhancing the catalyst's oxidation state and durability.Elsevier B.V.2024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/216276Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1016/j.cej.2024.150663Chemical Engineering Journal, 2024, vol. 487, num.150663, p. 1-12https://doi.org/10.1016/j.cej.2024.150663cc-by-nc-nd (c) Serrà i Ramos, Albert, et al., 2024http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/2162762026-05-27T06:46:51Z
dc.title.none.fl_str_mv Wireless pulsed nanophotoelectrochemical cell for the ultrafast degradation of organic pollutants
title Wireless pulsed nanophotoelectrochemical cell for the ultrafast degradation of organic pollutants
spellingShingle Wireless pulsed nanophotoelectrochemical cell for the ultrafast degradation of organic pollutants
Serrà i Ramos, Albert
Depuració de l'aigua
Antibiòtics
Nanotecnologia
Water purification
Antibiotics
Nanotechnology
title_short Wireless pulsed nanophotoelectrochemical cell for the ultrafast degradation of organic pollutants
title_full Wireless pulsed nanophotoelectrochemical cell for the ultrafast degradation of organic pollutants
title_fullStr Wireless pulsed nanophotoelectrochemical cell for the ultrafast degradation of organic pollutants
title_full_unstemmed Wireless pulsed nanophotoelectrochemical cell for the ultrafast degradation of organic pollutants
title_sort Wireless pulsed nanophotoelectrochemical cell for the ultrafast degradation of organic pollutants
dc.creator.none.fl_str_mv Serrà i Ramos, Albert
Gómez, Elvira
Al Hoda al Bast, Nour
Zhang, Yue
Duque, Marcos
Esplandiu, María J.
Esteve, Jaume
Nogués, Josep
Sepúlveda, Borja
author Serrà i Ramos, Albert
author_facet Serrà i Ramos, Albert
Gómez, Elvira
Al Hoda al Bast, Nour
Zhang, Yue
Duque, Marcos
Esplandiu, María J.
Esteve, Jaume
Nogués, Josep
Sepúlveda, Borja
author_role author
author2 Gómez, Elvira
Al Hoda al Bast, Nour
Zhang, Yue
Duque, Marcos
Esplandiu, María J.
Esteve, Jaume
Nogués, Josep
Sepúlveda, Borja
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Depuració de l'aigua
Antibiòtics
Nanotecnologia
Water purification
Antibiotics
Nanotechnology
topic Depuració de l'aigua
Antibiòtics
Nanotecnologia
Water purification
Antibiotics
Nanotechnology
description An urgent demand exists for advanced-technologies to efficiently remove persistent organic pollutants from water, while minimizing energy consumption. Here, we introduce an innovative wireless nanophotoelectrochemical (nPEC) cell using pulsed light for the ultrafast degradation/mineralization of organic pollutants. The nPEC cell comprises a nanostructured Si-pn photodiode that monolithically integrates: (i) a Si-n/Au nanowire-based-photocathode for effective light absorption and photovoltage generation, and (ii) a Si-p/mesoporous-NiPt photoanode serving as catalyst to wirelessly amplify the sulfate radical production by low-intensity light without any bias voltage. The efficacy of the nPEC cell was shown by ultrafast degradation (>99 %) and mineralization (>98 %) of three emerging pollutants (tetracycline, levofloxacin and anatoxin-A). Notably, reaction kinetics were boosted by more than one order of magnitude when exposed to light intensities ca. 5-fold lower than sunlight. Remarkably, pulsed light beams in the 100–500 Hz range provided an additional enhancement in the degradation/mineralization efficiencies, reducing energy-input by half, while enhancing the catalyst's oxidation state and durability.
publishDate 2024
dc.date.none.fl_str_mv 2024
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/2445/216276
url https://hdl.handle.net/2445/216276
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/10.1016/j.cej.2024.150663
Chemical Engineering Journal, 2024, vol. 487, num.150663, p. 1-12
https://doi.org/10.1016/j.cej.2024.150663
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Serrà i Ramos, Albert, et al., 2024
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Serrà i Ramos, Albert, et al., 2024
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
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 15,812429

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