Assessment of Ti, Ir, Ta and Ru influence on mixed metal oxide electrodes for photoelectrochemical generation of persulfate: Impact on sulfamethoxazole degradation

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorPontificia Universidad Católica de Chile (PUC)-
Autor(es): dc.contributorUniversidad de Chile (Uch)-
Autor(es): dc.contributorFacultad de Química y Biología. Universidad de Santiago de Chile (USACH)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidad Mayor-
Autor(es): dc.creatorGodoy Pérez, Mariel-
Autor(es): dc.creatorSilva, Caio C.G.-
Autor(es): dc.creatorEspinoza, L. Carolina-
Autor(es): dc.creatorBoldrin Zanoni, Maria Valnice-
Autor(es): dc.creatorBollo Dragnic, Soledad-
Autor(es): dc.creatorSalazar-González, Ricardo-
Data de aceite: dc.date.accessioned2025-08-21T19:46:33Z-
Data de disponibilização: dc.date.available2025-08-21T19:46:33Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.chemosphere.2024.143049-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/304698-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/304698-
Descrição: dc.descriptionThe presence of persulfate (S2O82−) in decontamination processes favors the oxidation of organic pollutants due to its strong oxidation power. In this research we study the photoelectrochemical generation of persulfate using five mixed metal oxides electrodes (MMO) with different compositions and its effect on the degradation of sulfamethoxazole antibiotic (SMX) by photoelectrocatalysis (PEC) and electro-oxidation (EO). By PEC, all anodes generated a higher concentration of S2O82− than those not exposed to light. The high S2O82−concentration obtained by PEC was 0.150 mM using MMO[Ti/Ir/Ta] in a solution with Na2SO4 100 mM applying a current density of 2 mA/cm2. On the other hand, the maximum concentration obtained was 0.250 mM at 30 min of electrolysis for MMO[Ti/Ir/Ta] using Na2SO4 50 mM and applying current density of 5 mA/cm2. S2O82−production by EO was between 0.005 and 0.089 mM. It is observed that MMO based in Ta2O5 showed the best S2O82− production. The effect of S2O82− electro-generation (using the anode with the highest and the anode with the lowest S2O82− production) on the degradation of sulfamethoxazole by PEC and EO was studied using the experimental conditions with the best production of this oxidant. MMO[Ti/Ir/Ta] and MMO[Ti/Ru] were used as anodes, and it was observed that by PEC, 100% of SMX was degraded after 30 min of electrolysis using MMO[Ti/Ir/Ta] and 60 min using MMO[Ti/Ru]. By EO, the degradation of SMX was partial, demonstrating that the electrophotocatalytic effect favors the generation of S2O82−, enhancing the degradation of SMX at short electrolysis times.-
Descrição: dc.descriptionGrupo de investigación de análisis WATER2. Departamento de química inorgánica Facultad de química y Farmacia Pontificia Universidad Católica de Chile (PUC), tratamiento, electroquímica, recuperación y reúso de agua-
Descrição: dc.descriptionCentro de Investigación de Procesos Redox Facultad de Ciencias Químicas y Farmacéuticas Universidad de Chile (Uch)-
Descrição: dc.descriptionDepartamento de Química de los Materiales Facultad de Química y Biología. Universidad de Santiago de Chile (USACH)-
Descrição: dc.descriptionInstituto de Química Universidade Estadual Paulista (UNESP), Rua Professor Francisco Degni, 55, Araraquara-
Descrição: dc.descriptionCentro de Nanotecnología Aplicada Facultad de Ciencias Ingeniería y Tecnología Universidad Mayor-
Descrição: dc.descriptionEscuela de Ingeniería en Medio Ambiente y Sustentabilidad Facultad de Ciencias Ingeniería y Tecnología Universidad Mayor-
Descrição: dc.descriptionInstituto de Química Universidade Estadual Paulista (UNESP), Rua Professor Francisco Degni, 55, Araraquara-
Idioma: dc.languageen-
Relação: dc.relationChemosphere-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectMixed metal oxide electrodes (MMO)-
Palavras-chave: dc.subjectPersulfate-
Palavras-chave: dc.subjectPhotoelectrochemistry-
Palavras-chave: dc.subjectShort-chain acids-
Palavras-chave: dc.subjectSulfamethoxazole degradation-
Título: dc.titleAssessment of Ti, Ir, Ta and Ru influence on mixed metal oxide electrodes for photoelectrochemical generation of persulfate: Impact on sulfamethoxazole degradation-
Tipo de arquivo: dc.typelivro digital-
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