Simple environmentally-friendly reduction of 4-nitrophenol

Abstract: 4-nitrophenol is a low molecular-mass organic compound involved in many chemical processes and commonly present in soils and in surface and ground waters, thereby causing severe environmental impact and health risk. Several methods have been proposed for its transformation (bio and chemica...

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Autores: Serrà i Ramos, Albert, Artal López, Raúl, Pozo, Maria, Garcia Amorós, Jaume, Gómez, Elvira
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
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:2445/158152
Acceso en línea:https://hdl.handle.net/2445/158152
Access Level:acceso abierto
Palabra clave:Electrocatàlisi
Reducció química
Catàlisi heterogènia
Depuració d'aigües residuals
Electrocatalysis
Reduction (Chemistry)
Heterogeneus catalysis
Purification of sewage
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spelling Simple environmentally-friendly reduction of 4-nitrophenolSerrà i Ramos, AlbertArtal López, RaúlPozo, MariaGarcia Amorós, JaumeGómez, ElviraElectrocatàlisiReducció químicaCatàlisi heterogèniaDepuració d'aigües residualsElectrocatalysisReduction (Chemistry)Heterogeneus catalysisPurification of sewageAbstract: 4-nitrophenol is a low molecular-mass organic compound involved in many chemical processes and commonly present in soils and in surface and ground waters, thereby causing severe environmental impact and health risk. Several methods have been proposed for its transformation (bio and chemical degradation). However, these strategies not only produce equally or more toxic aromatic species but also require harsh operating conditions and/or time-consuming treatments. In this context, we report a comprehensive and systematic study of the electrochemical reduction of 4-nitrophenol as a viable alternative. We have explored the electrochemical reduction of this pollutant over different metallic and carbonaceous substrata. Specifically, we have focused on the use of gold and silver working electrodes since they combine a high electrocatalytic activity for 4-nitrophenol reduction and a low electrocatalytic capacity for hydrogen evolution. The influence of the pH, temperature, and applied potential have also been considered as crucial parameters in the overall optimization of the process. While acidic media and high temperatures favor the clean reduction of 4-nitrophenol to 4-aminophenol, simultaneous hydrogen evolution results pernicious for this purpose. As a whole, a simple and effective electrochemical method for the transformation of 4-nitrophenol into 4-aminophenolis proposed with virtually no undesired by-products.MDPI2020202020202020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion12 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/158152Articles 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/10.3390/catal10040458Catalysts, 2020, vol. 10, p. 458-1-458-12https://doi.org/10.3390/catal10040458info:eu-repo/grantAgreement/EC/H2020/754364cc-by (c) Serrà i Ramos, Albert et al., 2020http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1581522026-05-29T05:05:01Z
dc.title.none.fl_str_mv Simple environmentally-friendly reduction of 4-nitrophenol
title Simple environmentally-friendly reduction of 4-nitrophenol
spellingShingle Simple environmentally-friendly reduction of 4-nitrophenol
Serrà i Ramos, Albert
Electrocatàlisi
Reducció química
Catàlisi heterogènia
Depuració d'aigües residuals
Electrocatalysis
Reduction (Chemistry)
Heterogeneus catalysis
Purification of sewage
title_short Simple environmentally-friendly reduction of 4-nitrophenol
title_full Simple environmentally-friendly reduction of 4-nitrophenol
title_fullStr Simple environmentally-friendly reduction of 4-nitrophenol
title_full_unstemmed Simple environmentally-friendly reduction of 4-nitrophenol
title_sort Simple environmentally-friendly reduction of 4-nitrophenol
dc.creator.none.fl_str_mv Serrà i Ramos, Albert
Artal López, Raúl
Pozo, Maria
Garcia Amorós, Jaume
Gómez, Elvira
author Serrà i Ramos, Albert
author_facet Serrà i Ramos, Albert
Artal López, Raúl
Pozo, Maria
Garcia Amorós, Jaume
Gómez, Elvira
author_role author
author2 Artal López, Raúl
Pozo, Maria
Garcia Amorós, Jaume
Gómez, Elvira
author2_role author
author
author
author
dc.subject.none.fl_str_mv Electrocatàlisi
Reducció química
Catàlisi heterogènia
Depuració d'aigües residuals
Electrocatalysis
Reduction (Chemistry)
Heterogeneus catalysis
Purification of sewage
topic Electrocatàlisi
Reducció química
Catàlisi heterogènia
Depuració d'aigües residuals
Electrocatalysis
Reduction (Chemistry)
Heterogeneus catalysis
Purification of sewage
description Abstract: 4-nitrophenol is a low molecular-mass organic compound involved in many chemical processes and commonly present in soils and in surface and ground waters, thereby causing severe environmental impact and health risk. Several methods have been proposed for its transformation (bio and chemical degradation). However, these strategies not only produce equally or more toxic aromatic species but also require harsh operating conditions and/or time-consuming treatments. In this context, we report a comprehensive and systematic study of the electrochemical reduction of 4-nitrophenol as a viable alternative. We have explored the electrochemical reduction of this pollutant over different metallic and carbonaceous substrata. Specifically, we have focused on the use of gold and silver working electrodes since they combine a high electrocatalytic activity for 4-nitrophenol reduction and a low electrocatalytic capacity for hydrogen evolution. The influence of the pH, temperature, and applied potential have also been considered as crucial parameters in the overall optimization of the process. While acidic media and high temperatures favor the clean reduction of 4-nitrophenol to 4-aminophenol, simultaneous hydrogen evolution results pernicious for this purpose. As a whole, a simple and effective electrochemical method for the transformation of 4-nitrophenol into 4-aminophenolis proposed with virtually no undesired by-products.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2020
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/2445/158152
url https://hdl.handle.net/2445/158152
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/10.3390/catal10040458
Catalysts, 2020, vol. 10, p. 458-1-458-12
https://doi.org/10.3390/catal10040458
info:eu-repo/grantAgreement/EC/H2020/754364
dc.rights.none.fl_str_mv cc-by (c) Serrà i Ramos, Albert et al., 2020
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Serrà i Ramos, Albert et al., 2020
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 12 p.
application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
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
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score 15,812429

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