Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniv Fed Piaui-
Autor(es): dc.contributorFANAT State Univ Rio Grande Norte-
Autor(es): dc.contributorUniv Estadual Piaui-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorSilva, F. C. M.-
Autor(es): dc.creatorSilva, L. K. R.-
Autor(es): dc.creatorSantos, A. G. D.-
Autor(es): dc.creatorCaldeira, V. P. S.-
Autor(es): dc.creatorCruz-Filho, J. F.-
Autor(es): dc.creatorCavalcante, L. S.-
Autor(es): dc.creatorLongo, E. [UNESP]-
Autor(es): dc.creatorLuz Jr., G. E.-
Data de aceite: dc.date.accessioned2022-02-22T00:20:01Z-
Data de disponibilização: dc.date.available2022-02-22T00:20:01Z-
Data de envio: dc.date.issued2020-12-10-
Data de envio: dc.date.issued2020-12-10-
Data de envio: dc.date.issued2020-05-02-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s10904-020-01560-3-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/197764-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/197764-
Descrição: dc.descriptionalpha-Ag2WO4 nanocrystals, mesoporous silica (SBA-15), and alpha-Ag2WO4/SBA-15 as a nanocomposite were prepared by sonochemical, hydrothermal, and in situ sonochemical methods respectively. Samples were characterized by X-ray diffraction (XRD), Rietveld refinement, micro-Raman, Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), N-2 adsorption/desorption, ultraviolet-visible (UV-Vis) diffuse reflectance spectroscopy, and Zeta potential. XRD patterns, Rietveld refinement, and XPS spectra confirmed the formation of alpha-Ag2WO4, SBA-15, and alpha-Ag2WO4/SBA-15. XPS spectra evidenced the formation of metallic silver during analysis. FE-SEM images illustrated the deposition of alpha-Ag2WO4 nanocrystals mainly on the external surface of SBA-15. N-2 adsorption data showed that the textural properties of alpha-Ag2WO4/SBA-15 were similar to pure SBA-15. Zeta potential data demonstrated that all samples synthetized have negatively charged surface. The materials were tested as adsorbents for the dye cationic rhodamine B. The adsorption behavior of rhodamine B onto alpha-Ag2WO4, SBA-15, and alpha-Ag2WO4/SBA-15 correspond to Langmuir adsorption isotherm and pseudo-second-order kinetics. The maximum adsorption capacity of alpha-Ag2WO4/SBA-15 was up to 150 mg g(-1) and 99% removal efficiency for RhB 20 mg L-1 in 15 min. Furthermore, 80% of RhB could be recuperated from adsorbents at pH 7. Graphic-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionUniv Fed Piaui, Dept Chem, BR-64049550 Teresina, PI, Brazil-
Descrição: dc.descriptionFANAT State Univ Rio Grande Norte, Dept Chem, BR-59610210 Mossoro, RN, Brazil-
Descrição: dc.descriptionUniv Estadual Piaui, GERATEC CCN DQ, Joao Cabral S-N, BR-64002150 Teresina, PI, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, CDMF, POB 355, BR-14801907 Araraquara, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, CDMF, POB 355, BR-14801907 Araraquara, SP, Brazil-
Descrição: dc.descriptionCNPq: 455864/2014-4-
Descrição: dc.descriptionCNPq: 307559/2016-8-
Descrição: dc.descriptionCNPq: 305757/2018-0-
Formato: dc.format3626-3645-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Relação: dc.relationJournal Of Inorganic And Organometallic Polymers And Materials-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectalpha-Ag2WO4 nanocrystals-
Palavras-chave: dc.subjectSonochemical-
Palavras-chave: dc.subjectSBA-15-
Palavras-chave: dc.subjectAdsorption-
Palavras-chave: dc.subjectRhodamine-
Título: dc.titleStructural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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