Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jelechem.2022.116617 http://hdl.handle.net/11449/242066 |
Resumo: | The efficient removal of organic micropollutants remains a major challenge for conventional water treatment technology. Photocatalysis, while effective, has not been widely adopted due to cost and implementation challenges. Here, an effective alternative is proposed through the integration of photocatalytic and electrochemical degradation of tetracycline (TC) in a continuous flow reactor using a WO3/W mesh as photo-electrode. WO3 nanoporous structures were grown on a tungsten (W) metal mesh via one step anodization in aqueous oxalic acid electrolyte (0.05 mol/L). The prepared materials were then used as 3D array photoanode in a continuous flow photo-electrocatalytic reactor. The combined influence of anodization time and post-treatment annealing temperature on the photo-electrochemical activity of the WO3/W mesh was examined through morphological and structural analysis. W mesh anodized for 4 h, and subsequently annealed at 450 °C have a homogenous nanoporous structure uniformly distributed and well adhering onto the W mesh, with average pore diameter of ∼ 80 nm and pore wall thickness of ∼ 250 nm. These materials are transparent, have high conductivity and WO3 monoclinic phase. Under optimal conditions of recirculating flow rate of 230 mL min−1 and bias potential of + 1.0 V vs Ag/AgCl/KCl (3 mol/L), the photo-electrocatalytic degradation led to a TC removal of up to 90 % after 60 min of treatment, almost 3 times higher than photocatalysis only. The excellent results by integration of photocatalysis and electrochemical degradation in a flow reactor, combined with a scalable WO3/W mesh, offers a useful information for upscaling and designing for practical issues in water treatment (such as costs and efficiency). |
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Repositório Institucional da UNESP |
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Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactorFlow reactorMesh structurePhotoelectrocatalysisTetracyclineWater treatmentWO3 photoelectrocatalystThe efficient removal of organic micropollutants remains a major challenge for conventional water treatment technology. Photocatalysis, while effective, has not been widely adopted due to cost and implementation challenges. Here, an effective alternative is proposed through the integration of photocatalytic and electrochemical degradation of tetracycline (TC) in a continuous flow reactor using a WO3/W mesh as photo-electrode. WO3 nanoporous structures were grown on a tungsten (W) metal mesh via one step anodization in aqueous oxalic acid electrolyte (0.05 mol/L). The prepared materials were then used as 3D array photoanode in a continuous flow photo-electrocatalytic reactor. The combined influence of anodization time and post-treatment annealing temperature on the photo-electrochemical activity of the WO3/W mesh was examined through morphological and structural analysis. W mesh anodized for 4 h, and subsequently annealed at 450 °C have a homogenous nanoporous structure uniformly distributed and well adhering onto the W mesh, with average pore diameter of ∼ 80 nm and pore wall thickness of ∼ 250 nm. These materials are transparent, have high conductivity and WO3 monoclinic phase. Under optimal conditions of recirculating flow rate of 230 mL min−1 and bias potential of + 1.0 V vs Ag/AgCl/KCl (3 mol/L), the photo-electrocatalytic degradation led to a TC removal of up to 90 % after 60 min of treatment, almost 3 times higher than photocatalysis only. The excellent results by integration of photocatalysis and electrochemical degradation in a flow reactor, combined with a scalable WO3/W mesh, offers a useful information for upscaling and designing for practical issues in water treatment (such as costs and efficiency).National Institute of Alternative Technologies for Detection Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances (INCT-DATREM) Institute of Chemistry São Paulo State University, São PauloDepartment of Chemical Engineering University of Bath, Claverton DownNational Institute of Alternative Technologies for Detection Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances (INCT-DATREM) Institute of Chemistry São Paulo State University, São PauloUniversidade Estadual Paulista (UNESP)University of BathMartins, Alysson Stefan [UNESP]Guaraldo, Thais TassoWenk, JannisMattia, DavideBoldrin Zanoni, Maria Valnice [UNESP]2023-03-02T08:36:59Z2023-03-02T08:36:59Z2022-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jelechem.2022.116617Journal of Electroanalytical Chemistry, v. 920.1572-6657http://hdl.handle.net/11449/24206610.1016/j.jelechem.2022.1166172-s2.0-85134607433Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Electroanalytical Chemistryinfo:eu-repo/semantics/openAccess2023-03-02T08:37:00Zoai:repositorio.unesp.br:11449/242066Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:43:41.910649Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor |
title |
Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor |
spellingShingle |
Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor Martins, Alysson Stefan [UNESP] Flow reactor Mesh structure Photoelectrocatalysis Tetracycline Water treatment WO3 photoelectrocatalyst |
title_short |
Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor |
title_full |
Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor |
title_fullStr |
Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor |
title_full_unstemmed |
Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor |
title_sort |
Nanoporous WO3 grown on a 3D tungsten mesh by electrochemical anodization for enhanced photoelectrocatalytic degradation of tetracycline in a continuous flow reactor |
author |
Martins, Alysson Stefan [UNESP] |
author_facet |
Martins, Alysson Stefan [UNESP] Guaraldo, Thais Tasso Wenk, Jannis Mattia, Davide Boldrin Zanoni, Maria Valnice [UNESP] |
author_role |
author |
author2 |
Guaraldo, Thais Tasso Wenk, Jannis Mattia, Davide Boldrin Zanoni, Maria Valnice [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) University of Bath |
dc.contributor.author.fl_str_mv |
Martins, Alysson Stefan [UNESP] Guaraldo, Thais Tasso Wenk, Jannis Mattia, Davide Boldrin Zanoni, Maria Valnice [UNESP] |
dc.subject.por.fl_str_mv |
Flow reactor Mesh structure Photoelectrocatalysis Tetracycline Water treatment WO3 photoelectrocatalyst |
topic |
Flow reactor Mesh structure Photoelectrocatalysis Tetracycline Water treatment WO3 photoelectrocatalyst |
description |
The efficient removal of organic micropollutants remains a major challenge for conventional water treatment technology. Photocatalysis, while effective, has not been widely adopted due to cost and implementation challenges. Here, an effective alternative is proposed through the integration of photocatalytic and electrochemical degradation of tetracycline (TC) in a continuous flow reactor using a WO3/W mesh as photo-electrode. WO3 nanoporous structures were grown on a tungsten (W) metal mesh via one step anodization in aqueous oxalic acid electrolyte (0.05 mol/L). The prepared materials were then used as 3D array photoanode in a continuous flow photo-electrocatalytic reactor. The combined influence of anodization time and post-treatment annealing temperature on the photo-electrochemical activity of the WO3/W mesh was examined through morphological and structural analysis. W mesh anodized for 4 h, and subsequently annealed at 450 °C have a homogenous nanoporous structure uniformly distributed and well adhering onto the W mesh, with average pore diameter of ∼ 80 nm and pore wall thickness of ∼ 250 nm. These materials are transparent, have high conductivity and WO3 monoclinic phase. Under optimal conditions of recirculating flow rate of 230 mL min−1 and bias potential of + 1.0 V vs Ag/AgCl/KCl (3 mol/L), the photo-electrocatalytic degradation led to a TC removal of up to 90 % after 60 min of treatment, almost 3 times higher than photocatalysis only. The excellent results by integration of photocatalysis and electrochemical degradation in a flow reactor, combined with a scalable WO3/W mesh, offers a useful information for upscaling and designing for practical issues in water treatment (such as costs and efficiency). |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-09-01 2023-03-02T08:36:59Z 2023-03-02T08:36:59Z |
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/10.1016/j.jelechem.2022.116617 Journal of Electroanalytical Chemistry, v. 920. 1572-6657 http://hdl.handle.net/11449/242066 10.1016/j.jelechem.2022.116617 2-s2.0-85134607433 |
url |
http://dx.doi.org/10.1016/j.jelechem.2022.116617 http://hdl.handle.net/11449/242066 |
identifier_str_mv |
Journal of Electroanalytical Chemistry, v. 920. 1572-6657 10.1016/j.jelechem.2022.116617 2-s2.0-85134607433 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Electroanalytical Chemistry |
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 |
|
_version_ |
1808128409205735424 |