Effect of chemical potential on the structural modification of titanate-based photocatalysts: Fast dye degradation efficiency and adsorption power

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal do ABC (UFABC)-
Autor(es): dc.contributorUniversidade Federal de Goiás (UFG)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorFederal Institute of São Paulo (IFSP)-
Autor(es): dc.creatorPereira, Chrystopher A.M.-
Autor(es): dc.creatorAmoresi, Rafael A.C.-
Autor(es): dc.creatorTeixeira, Guilhermina F.-
Autor(es): dc.creatorOliveira, Regiane C.-
Autor(es): dc.creatorColeto Jr, Ubirajara-
Autor(es): dc.creatorda Luz, Angélica R.-
Autor(es): dc.creatorde Almeida, Priscila B.-
Autor(es): dc.creatorSimões, Alexandre Z.-
Autor(es): dc.creatorMonteiro Filho, Elias S.-
Autor(es): dc.creatorLongo, Elson-
Autor(es): dc.creatorPerazolli, Leinig A.-
Data de aceite: dc.date.accessioned2025-08-21T21:07:37Z-
Data de disponibilização: dc.date.available2025-08-21T21:07:37Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-06-25-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2023.169691-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/249772-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/249772-
Descrição: dc.descriptionIn this work, the impact of the chemical potential of sodium hydroxide concentration was evaluated in the synthesis of titanate-based photocatalysts prepared by the microwave-assisted hydrothermal method. The materials were characterized by techniques that made it possible to unveil their structural, morphological, and electronic properties, corroborating the formation of a heterojunction of sodium titanate (Na2Ti6O13) and hydrated hydrogen titanate (H2Ti3O7·H2O). The results demonstrated that the increased chemical potential of NaOH caused an ionic exchange between Na+ and H+ ions, making the H2Ti3O7·H2O phase more stable. The oriented attachment (OA) growth mechanism was predominant, resulting in nanoparticles with nanosheet-like morphology. The photocatalytic efficiency of the materials was tested for the discoloration of Rhodamine B (RhB) and Methylene Blue (MB) dyes. The photocatalyst with the best efficiency showed a half-life time for RhB discoloration of only 5 min and a high capacity of adsorption in the MB medium (∼90% in 10 min). The details of the nanoparticle growth mechanism, the charge transport in the heterojunction, and the stability and reusability of the materials were clarified.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionChemistry Institute São Paulo State University (UNESP), SP-
Descrição: dc.descriptionCenter for Engineering Modeling and Applied Social Sciences Federal University of ABC (UFABC), 5001 Dos Estados Avenue, SP-
Descrição: dc.descriptionFaculty of Engineering of Guaratinguetá (UNESP), SP-
Descrição: dc.descriptionChemistry Institute Federal University of Goiás (UFG), GO-
Descrição: dc.descriptionDepartment of Chemistry São Carlos Federal University (UFSCar), SP-
Descrição: dc.descriptionDepartment of Chemistry Federal Institute of São Paulo (IFSP), SP-
Descrição: dc.descriptionChemistry Institute São Paulo State University (UNESP), SP-
Descrição: dc.descriptionFaculty of Engineering of Guaratinguetá (UNESP), SP-
Idioma: dc.languageen-
Relação: dc.relationJournal of Alloys and Compounds-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectChemical potential-
Palavras-chave: dc.subjectDye discoloration-
Palavras-chave: dc.subjectMicrowave-assisted hydrothermal method-
Palavras-chave: dc.subjectPhotocatalysts-
Palavras-chave: dc.subjectTitanate-based nanosheets-
Título: dc.titleEffect of chemical potential on the structural modification of titanate-based photocatalysts: Fast dye degradation efficiency and adsorption power-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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