Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production

Detalhes bibliográficos
Autor(a) principal: Câmara Cardozo, Jussara
Data de Publicação: 2022
Outros Autores: da Silva, Djalma R., Martínez-Huitle, Carlos A. [UNESP], Quiroz, Marco A., Dos Santos, Elisama V.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3390/ma15217445
http://hdl.handle.net/11449/246297
Resumo: In this study, for the first time, the production of green hydrogen gas (H2) in the cathodic compartment, in concomitance with the electrochemical oxidation (EO) of an aqueous solution containing Calcon dye at the anodic compartment, was studied in a PEM-type electrochemical cell driven by a photovoltaic (PV) energy source. EO of Calcon was carried out on a Nb/BDD anode at different current densities (7.5, 15 and 30 mA cm−2), while a stainless steel (SS) cathode was used for green H2 production. The results of the analysis by UV-vis spectroscopy and total organic carbon (TOC) clearly showed that the electrochemical oxidation (EO) of the Calcon dye after 180 min of electrolysis time by applying 30 mA cm−2 reached up to 90% of degradation and 57% of TOC removal. Meanwhile, under these experimental conditions, a green H2 production greater than 0.9 L was achieved, with a Faradaic efficiency of 98%. The hybrid electrolysis strategy is particularly attractive in the context of a circular economy, as these can be coupled with the use of more complex water matrices to transform organic depollution into an energy resource to produce H2 as a chemical energy carrier.
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spelling Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Productiondyeelectrochemical oxidationgreen hydrogenphotovoltaic arraysimultaneous processesIn this study, for the first time, the production of green hydrogen gas (H2) in the cathodic compartment, in concomitance with the electrochemical oxidation (EO) of an aqueous solution containing Calcon dye at the anodic compartment, was studied in a PEM-type electrochemical cell driven by a photovoltaic (PV) energy source. EO of Calcon was carried out on a Nb/BDD anode at different current densities (7.5, 15 and 30 mA cm−2), while a stainless steel (SS) cathode was used for green H2 production. The results of the analysis by UV-vis spectroscopy and total organic carbon (TOC) clearly showed that the electrochemical oxidation (EO) of the Calcon dye after 180 min of electrolysis time by applying 30 mA cm−2 reached up to 90% of degradation and 57% of TOC removal. Meanwhile, under these experimental conditions, a green H2 production greater than 0.9 L was achieved, with a Faradaic efficiency of 98%. The hybrid electrolysis strategy is particularly attractive in the context of a circular economy, as these can be coupled with the use of more complex water matrices to transform organic depollution into an energy resource to produce H2 as a chemical energy carrier.Institute of Chemistry Federal University of Rio Grande do Norte, NatalNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) UNESPSchool of Science and Technology Federal University of Rio Grande do Norte, NatalNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) UNESPFederal University of Rio Grande do NorteUniversidade Estadual Paulista (UNESP)Câmara Cardozo, Jussarada Silva, Djalma R.Martínez-Huitle, Carlos A. [UNESP]Quiroz, Marco A.Dos Santos, Elisama V.2023-07-29T12:37:05Z2023-07-29T12:37:05Z2022-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/ma15217445Materials, v. 15, n. 21, 2022.1996-1944http://hdl.handle.net/11449/24629710.3390/ma152174452-s2.0-85141848189Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterialsinfo:eu-repo/semantics/openAccess2023-07-29T12:37:05Zoai:repositorio.unesp.br:11449/246297Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:33:00.932852Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production
title Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production
spellingShingle Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production
Câmara Cardozo, Jussara
dye
electrochemical oxidation
green hydrogen
photovoltaic array
simultaneous processes
title_short Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production
title_full Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production
title_fullStr Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production
title_full_unstemmed Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production
title_sort Photovoltaic Electrochemically Driven Degradation of Calcon Dye with Simultaneous Green Hydrogen Production
author Câmara Cardozo, Jussara
author_facet Câmara Cardozo, Jussara
da Silva, Djalma R.
Martínez-Huitle, Carlos A. [UNESP]
Quiroz, Marco A.
Dos Santos, Elisama V.
author_role author
author2 da Silva, Djalma R.
Martínez-Huitle, Carlos A. [UNESP]
Quiroz, Marco A.
Dos Santos, Elisama V.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Federal University of Rio Grande do Norte
Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Câmara Cardozo, Jussara
da Silva, Djalma R.
Martínez-Huitle, Carlos A. [UNESP]
Quiroz, Marco A.
Dos Santos, Elisama V.
dc.subject.por.fl_str_mv dye
electrochemical oxidation
green hydrogen
photovoltaic array
simultaneous processes
topic dye
electrochemical oxidation
green hydrogen
photovoltaic array
simultaneous processes
description In this study, for the first time, the production of green hydrogen gas (H2) in the cathodic compartment, in concomitance with the electrochemical oxidation (EO) of an aqueous solution containing Calcon dye at the anodic compartment, was studied in a PEM-type electrochemical cell driven by a photovoltaic (PV) energy source. EO of Calcon was carried out on a Nb/BDD anode at different current densities (7.5, 15 and 30 mA cm−2), while a stainless steel (SS) cathode was used for green H2 production. The results of the analysis by UV-vis spectroscopy and total organic carbon (TOC) clearly showed that the electrochemical oxidation (EO) of the Calcon dye after 180 min of electrolysis time by applying 30 mA cm−2 reached up to 90% of degradation and 57% of TOC removal. Meanwhile, under these experimental conditions, a green H2 production greater than 0.9 L was achieved, with a Faradaic efficiency of 98%. The hybrid electrolysis strategy is particularly attractive in the context of a circular economy, as these can be coupled with the use of more complex water matrices to transform organic depollution into an energy resource to produce H2 as a chemical energy carrier.
publishDate 2022
dc.date.none.fl_str_mv 2022-11-01
2023-07-29T12:37:05Z
2023-07-29T12:37:05Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.3390/ma15217445
Materials, v. 15, n. 21, 2022.
1996-1944
http://hdl.handle.net/11449/246297
10.3390/ma15217445
2-s2.0-85141848189
url http://dx.doi.org/10.3390/ma15217445
http://hdl.handle.net/11449/246297
identifier_str_mv Materials, v. 15, n. 21, 2022.
1996-1944
10.3390/ma15217445
2-s2.0-85141848189
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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