Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution

Detalhes bibliográficos
Autor(a) principal: Padovini, D. S.S. [UNESP]
Data de Publicação: 2019
Outros Autores: Magdalena, A. G. [UNESP], Capeli, R. G. [UNESP], Longo, E., Dalmaschio, C. J., Chiquito, A. J., Pontes, F. M. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.matchemphys.2019.05.024
http://hdl.handle.net/11449/189161
Resumo: ZrO2@SiO2 core-shell nanostructures were synthesized by a facile two-step hydrothermal plus Stöber chemical route. The structure, morphology and properties of the nanoparticles were characterized using X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV–Vis spectroscopy, zeta-potential measurements, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). XRD confirmed the presence of tetragonal ZrO2 crystalline and amorphous SiO2 phases. FTIR analysis confirmed the existence of Zr-O-Si bonds at the surface of the core-shell nanostructures. According to the UV–Vis spectroscopy measurements, the energy band gap value of the uncoated ZrO2 nanoparticles was estimated to be 5.13 eV and the excitation energy (energy band discontinuity) of the ZrO2@SiO2 core-shell nanostructures was found to be 2.31 eV. Transmission electronic microscopy results showed 5–8 nm ZrO2 nanoparticles highly crystalline and fully covered by amorphous and uniform SiO2 layer 10–15 nm wide, which is an evidence of the core-shell structure. Photocatalytic performance of ZrO2@SiO2 core-shell nanostructures was carried out using rhodamine B dye in aqueous solution at room temperature under UV light irradiation. ZrO2@SiO2 core-shell nanostructures showed better photocatalytic activities in comparison to the as prepared ZrO2 and SiO2 samples. The enhanced photocatalytic performance for ZrO2@SiO2 core-shell nanostructures may be the result of the Zr-O-Si interfacial layer narrowing the energy gap needed to electron-hole pairs creation, thus enhancing photoinduced charges generation and reducing charges recombination.
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spelling Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solutionHydrothermalPhotocatalysisRhodamine BZrO2@SiO2 nanostructureZrO2@SiO2 core-shell nanostructures were synthesized by a facile two-step hydrothermal plus Stöber chemical route. The structure, morphology and properties of the nanoparticles were characterized using X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV–Vis spectroscopy, zeta-potential measurements, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). XRD confirmed the presence of tetragonal ZrO2 crystalline and amorphous SiO2 phases. FTIR analysis confirmed the existence of Zr-O-Si bonds at the surface of the core-shell nanostructures. According to the UV–Vis spectroscopy measurements, the energy band gap value of the uncoated ZrO2 nanoparticles was estimated to be 5.13 eV and the excitation energy (energy band discontinuity) of the ZrO2@SiO2 core-shell nanostructures was found to be 2.31 eV. Transmission electronic microscopy results showed 5–8 nm ZrO2 nanoparticles highly crystalline and fully covered by amorphous and uniform SiO2 layer 10–15 nm wide, which is an evidence of the core-shell structure. Photocatalytic performance of ZrO2@SiO2 core-shell nanostructures was carried out using rhodamine B dye in aqueous solution at room temperature under UV light irradiation. ZrO2@SiO2 core-shell nanostructures showed better photocatalytic activities in comparison to the as prepared ZrO2 and SiO2 samples. The enhanced photocatalytic performance for ZrO2@SiO2 core-shell nanostructures may be the result of the Zr-O-Si interfacial layer narrowing the energy gap needed to electron-hole pairs creation, thus enhancing photoinduced charges generation and reducing charges recombination.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)LDMFN – Department of Chemistry Universidade Estadual Paulista - Unesp, P.O. Box 473, BauruLIEC – CDMF – Department of Chemistry Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676, São CarlosDepartment of Natural Science Universidade Federal do Espírito Santo - UFES, São MateusNanO LaB – Department of Physics Universidade Federal de São Carlos, Via Washington Luiz, Km 235, P.O. Box 676, São CarlosLDMFN – Department of Chemistry Universidade Estadual Paulista - Unesp, P.O. Box 473, BauruCNPq: 470147/2012-1Universidade Estadual Paulista (Unesp)Universidade Federal de São Carlos (UFSCar)Universidade Federal do Espírito Santo (UFES)Padovini, D. S.S. [UNESP]Magdalena, A. G. [UNESP]Capeli, R. G. [UNESP]Longo, E.Dalmaschio, C. J.Chiquito, A. J.Pontes, F. M. [UNESP]2019-10-06T16:31:41Z2019-10-06T16:31:41Z2019-05-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-8http://dx.doi.org/10.1016/j.matchemphys.2019.05.024Materials Chemistry and Physics, v. 233, p. 1-8.0254-0584http://hdl.handle.net/11449/18916110.1016/j.matchemphys.2019.05.0242-s2.0-85066104186Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Chemistry and Physicsinfo:eu-repo/semantics/openAccess2024-04-29T18:16:49Zoai:repositorio.unesp.br:11449/189161Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:01:34.810802Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution
title Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution
spellingShingle Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution
Padovini, D. S.S. [UNESP]
Hydrothermal
Photocatalysis
Rhodamine B
ZrO2@SiO2 nanostructure
title_short Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution
title_full Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution
title_fullStr Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution
title_full_unstemmed Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution
title_sort Synthesis and characterization of ZrO2@SiO2 core-shell nanostructure as nanocatalyst: Application for environmental remediation of rhodamine B dye aqueous solution
author Padovini, D. S.S. [UNESP]
author_facet Padovini, D. S.S. [UNESP]
Magdalena, A. G. [UNESP]
Capeli, R. G. [UNESP]
Longo, E.
Dalmaschio, C. J.
Chiquito, A. J.
Pontes, F. M. [UNESP]
author_role author
author2 Magdalena, A. G. [UNESP]
Capeli, R. G. [UNESP]
Longo, E.
Dalmaschio, C. J.
Chiquito, A. J.
Pontes, F. M. [UNESP]
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Federal de São Carlos (UFSCar)
Universidade Federal do Espírito Santo (UFES)
dc.contributor.author.fl_str_mv Padovini, D. S.S. [UNESP]
Magdalena, A. G. [UNESP]
Capeli, R. G. [UNESP]
Longo, E.
Dalmaschio, C. J.
Chiquito, A. J.
Pontes, F. M. [UNESP]
dc.subject.por.fl_str_mv Hydrothermal
Photocatalysis
Rhodamine B
ZrO2@SiO2 nanostructure
topic Hydrothermal
Photocatalysis
Rhodamine B
ZrO2@SiO2 nanostructure
description ZrO2@SiO2 core-shell nanostructures were synthesized by a facile two-step hydrothermal plus Stöber chemical route. The structure, morphology and properties of the nanoparticles were characterized using X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV–Vis spectroscopy, zeta-potential measurements, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). XRD confirmed the presence of tetragonal ZrO2 crystalline and amorphous SiO2 phases. FTIR analysis confirmed the existence of Zr-O-Si bonds at the surface of the core-shell nanostructures. According to the UV–Vis spectroscopy measurements, the energy band gap value of the uncoated ZrO2 nanoparticles was estimated to be 5.13 eV and the excitation energy (energy band discontinuity) of the ZrO2@SiO2 core-shell nanostructures was found to be 2.31 eV. Transmission electronic microscopy results showed 5–8 nm ZrO2 nanoparticles highly crystalline and fully covered by amorphous and uniform SiO2 layer 10–15 nm wide, which is an evidence of the core-shell structure. Photocatalytic performance of ZrO2@SiO2 core-shell nanostructures was carried out using rhodamine B dye in aqueous solution at room temperature under UV light irradiation. ZrO2@SiO2 core-shell nanostructures showed better photocatalytic activities in comparison to the as prepared ZrO2 and SiO2 samples. The enhanced photocatalytic performance for ZrO2@SiO2 core-shell nanostructures may be the result of the Zr-O-Si interfacial layer narrowing the energy gap needed to electron-hole pairs creation, thus enhancing photoinduced charges generation and reducing charges recombination.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-06T16:31:41Z
2019-10-06T16:31:41Z
2019-05-15
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/10.1016/j.matchemphys.2019.05.024
Materials Chemistry and Physics, v. 233, p. 1-8.
0254-0584
http://hdl.handle.net/11449/189161
10.1016/j.matchemphys.2019.05.024
2-s2.0-85066104186
url http://dx.doi.org/10.1016/j.matchemphys.2019.05.024
http://hdl.handle.net/11449/189161
identifier_str_mv Materials Chemistry and Physics, v. 233, p. 1-8.
0254-0584
10.1016/j.matchemphys.2019.05.024
2-s2.0-85066104186
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Chemistry and Physics
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1-8
dc.source.none.fl_str_mv Scopus
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)
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