Synthesis, characterization, photocatalytic, and antimicrobial activity of ZrO2 nanoparticles and Ag@ZrO2 nanocomposite prepared by the advanced oxidative process/hydrothermal route

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal do Espírito Santo (UFES)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.creatorNova, C. V. [UNESP]-
Autor(es): dc.creatorReis, K. A. [UNESP]-
Autor(es): dc.creatorPinheiro, A. L. [UNESP]-
Autor(es): dc.creatorDalmaschio, C. J.-
Autor(es): dc.creatorChiquito, A. J.-
Autor(es): dc.creatorTeodoro, M. D.-
Autor(es): dc.creatorRodrigues, A. D.-
Autor(es): dc.creatorLongo, E.-
Autor(es): dc.creatorPontes, F. M. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:45:38Z-
Data de disponibilização: dc.date.available2022-02-22T00:45:38Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-04-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s10971-021-05488-z-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205899-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205899-
Descrição: dc.descriptionZrO2 nanoparticles (ZrO2 NPs) and Ag@ZrO2 nanocomposite (Ag@ZrO2 NCs) were prepared from zirconium (IV) butoxide in the absence of base or acid mineraliser by the advanced oxidation processes (AOP) and subsequent hydrothermal treatment. Samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscope (SEM), Raman, Photoluminescence (PL), Fourier transform infrared (FTIR), and diffuse reflectance spectroscopy (DRS). XRD and Raman analyses confirmed ZrO2 NPs and Ag@ZrO2 NCs tetragonal crystalline phase synthesized at 200 °C for 1 h. HRTEM images of ZrO2 NPs and Ag@ZrO2 NCs after treatment at 200 °C indicated small nanoparticles with characteristic size of 5–8 nm (ZrO2) and 40–50 nm (Ag NPs). It was found that Ag@ZrO2 NCs showed outstanding photocatalytic activity in photodegradation Rhodamine B dye compared with pure ZrO2 NPs. Antibacterial activity tests of ZrO2 NPs and Ag@ZrO2 NCs were carried out using E. coli and S. aureus as model strains of Gram-negative and Gram-positive bacteria, respectively. Ag@ZrO2 NCs were capable of efficiently growth inhibition of bacteria cultures in more than 75% E. Coli compared to ZrO2 NPs that exhibited <10% instead. However, at the same concentration (for example 0.25 mg/mL) we found that both ZrO2 NPs and Ag@ZrO2 NCs were significantly more effective against S. aureus in comparison with E. coli showing bacterial growth inhibition higher than 90% for S. aureus. Morphological observation of bacterial cells by scanning electron microscopy (SEM) revealed that nanoparticles and nanocomposite caused irreversible damage to the cell membrane. [Figure not available: see fulltext.].-
Descrição: dc.descriptionDepartment of Chemistry Universidade Estadual Paulista—Unesp, P.O. Box 473-
Descrição: dc.descriptionDepartment of Biology Universidade Estadual Paulista—Unesp, P.O. Box 473-
Descrição: dc.descriptionDepartment of Chemistry Universidade Federal do Espírito Santo - UFES-
Descrição: dc.descriptionNanO LaB—Department of Physics Universidade Federal de São Carlos, P.O. Box 676-
Descrição: dc.descriptionGrupo de Nanoestruturas Semicondutoras—Department of Physics Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676-
Descrição: dc.descriptionDepartment of Physics Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676-
Descrição: dc.descriptionLIEC—CDMF—Department of Chemistry Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676-
Descrição: dc.descriptionDepartment of Chemistry Universidade Estadual Paulista—Unesp, P.O. Box 473-
Descrição: dc.descriptionDepartment of Biology Universidade Estadual Paulista—Unesp, P.O. Box 473-
Formato: dc.format113-126-
Idioma: dc.languageen-
Relação: dc.relationJournal of Sol-Gel Science and Technology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAg-
Palavras-chave: dc.subjectHydrothermal route-
Palavras-chave: dc.subjectNanocomposite-
Palavras-chave: dc.subjectNanoparticles-
Palavras-chave: dc.subjectZrO2-
Título: dc.titleSynthesis, characterization, photocatalytic, and antimicrobial activity of ZrO2 nanoparticles and Ag@ZrO2 nanocomposite prepared by the advanced oxidative process/hydrothermal route-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.