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

Detalhes bibliográficos
Autor(a) principal: Silva, F. C. M.
Data de Publicação: 2020
Outros Autores: Silva, L. K. R., Santos, A. G. D., Caldeira, V. P. S., Cruz-Filho, J. F., Cavalcante, L. S., Longo, E. [UNESP], Luz Jr., G. E.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s10904-020-01560-3
http://hdl.handle.net/11449/197764
Resumo: alpha-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
id UNSP_f419ffdbc17adf3f4c29ae0c80c8fb10
oai_identifier_str oai:repositorio.unesp.br:11449/197764
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dyealpha-Ag2WO4 nanocrystalsSonochemicalSBA-15AdsorptionRhodaminealpha-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. GraphicCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Fed Piaui, Dept Chem, BR-64049550 Teresina, PI, BrazilFANAT State Univ Rio Grande Norte, Dept Chem, BR-59610210 Mossoro, RN, BrazilUniv Estadual Piaui, GERATEC CCN DQ, Joao Cabral S-N, BR-64002150 Teresina, PI, BrazilUniv Estadual Paulista, CDMF, POB 355, BR-14801907 Araraquara, SP, BrazilUniv Estadual Paulista, CDMF, POB 355, BR-14801907 Araraquara, SP, BrazilCNPq: 455864/2014-4CNPq: 307559/2016-8CNPq: 305757/2018-0SpringerUniv Fed PiauiFANAT State Univ Rio Grande NorteUniv Estadual PiauiUniversidade Estadual Paulista (Unesp)Silva, F. C. M.Silva, L. K. R.Santos, A. G. D.Caldeira, V. P. S.Cruz-Filho, J. F.Cavalcante, L. S.Longo, E. [UNESP]Luz Jr., G. E.2020-12-11T17:02:08Z2020-12-11T17:02:08Z2020-05-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article3626-3645http://dx.doi.org/10.1007/s10904-020-01560-3Journal Of Inorganic And Organometallic Polymers And Materials. Dordrecht: Springer, v. 30, n. 9, p. 3626-3645, 2020.1574-1443http://hdl.handle.net/11449/19776410.1007/s10904-020-01560-3WOS:000530222000001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Inorganic And Organometallic Polymers And Materialsinfo:eu-repo/semantics/openAccess2021-10-23T07:46:24Zoai:repositorio.unesp.br:11449/197764Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T07:46:24Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye
title Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye
spellingShingle Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye
Silva, F. C. M.
alpha-Ag2WO4 nanocrystals
Sonochemical
SBA-15
Adsorption
Rhodamine
title_short Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye
title_full Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye
title_fullStr Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye
title_full_unstemmed Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye
title_sort Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of alpha-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye
author Silva, F. C. M.
author_facet Silva, F. C. M.
Silva, L. K. R.
Santos, A. G. D.
Caldeira, V. P. S.
Cruz-Filho, J. F.
Cavalcante, L. S.
Longo, E. [UNESP]
Luz Jr., G. E.
author_role author
author2 Silva, L. K. R.
Santos, A. G. D.
Caldeira, V. P. S.
Cruz-Filho, J. F.
Cavalcante, L. S.
Longo, E. [UNESP]
Luz Jr., G. E.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Univ Fed Piaui
FANAT State Univ Rio Grande Norte
Univ Estadual Piaui
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Silva, F. C. M.
Silva, L. K. R.
Santos, A. G. D.
Caldeira, V. P. S.
Cruz-Filho, J. F.
Cavalcante, L. S.
Longo, E. [UNESP]
Luz Jr., G. E.
dc.subject.por.fl_str_mv alpha-Ag2WO4 nanocrystals
Sonochemical
SBA-15
Adsorption
Rhodamine
topic alpha-Ag2WO4 nanocrystals
Sonochemical
SBA-15
Adsorption
Rhodamine
description alpha-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
publishDate 2020
dc.date.none.fl_str_mv 2020-12-11T17:02:08Z
2020-12-11T17:02:08Z
2020-05-02
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/10.1007/s10904-020-01560-3
Journal Of Inorganic And Organometallic Polymers And Materials. Dordrecht: Springer, v. 30, n. 9, p. 3626-3645, 2020.
1574-1443
http://hdl.handle.net/11449/197764
10.1007/s10904-020-01560-3
WOS:000530222000001
url http://dx.doi.org/10.1007/s10904-020-01560-3
http://hdl.handle.net/11449/197764
identifier_str_mv Journal Of Inorganic And Organometallic Polymers And Materials. Dordrecht: Springer, v. 30, n. 9, p. 3626-3645, 2020.
1574-1443
10.1007/s10904-020-01560-3
WOS:000530222000001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal Of Inorganic And Organometallic Polymers And Materials
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 3626-3645
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv Web of Science
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_ 1799965347272458240

Registros relacionados