Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes

Autores
Leal Marchena, Candelaria; Gómez, Silvina del Valle; Saux, Clara; Pierella, Liliana Beatriz; Pizzio, Luis Rene
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Materials based on tungstophosphoric acid (TPA) immobilized on NH4ZSM5 zeolite were prepared by wet impregnation of the zeolite matrix with TPA aqueous solutions. Their concentration was varied in order to obtain TPA contents of 5%, 10%, 20%, and 30% w/w in the solid. The materials were characterized by N2 adsorption-desorption isotherms, XRD, FT-IR, 31P MAS-NMR, TGA‑DSC, DRS-UV-Vis, and the acidic behavior was studied by potentiometric titration with n-butylamine. The BET surface area (SBET) decreased when the TPA content was raised as a result of zeolite pore blocking. The X-ray diffraction patterns of the solids modified with TPA only presented the characteristic peaks of NH4ZSM5 zeolites, and an additional set of peaks assigned to the presence of (NH4)3PW12O40. According to the Fourier transform infrared and 31P magic angle spinning-nuclear magnetic resonance spectra, the main species present in the samples was the [PW12O40]3- anion, which was partially transformed into the [P2W21O71]6- anion during the synthesis and drying steps. The thermal stability of the NH4ZSM5TPA materials was similar to that of their parent zeolites. Moreover, the samples with the highest TPA content exhibited band gap energy values similar to those reported for TiO2. The immobilization of TPA on NH4ZSM5 zeolite allowed the obtention of catalysts with high photocatalytic activity in the degradation of methyl orange dye (MO) in water, at 25 °C. These can be reused at least three times without any significant decrease in degree of degradation.
Fil: Leal Marchena, Candelaria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina
Fil: Gómez, Silvina del Valle. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina
Fil: Saux, Clara. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina
Fil: Pierella, Liliana Beatriz. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina
Fil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas; Argentina
Materia
tungstophosphoric acid
immobilized
NH4ZSM5 zeolite
photocatalytic degradation of dyes
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/9745
Acceder
id CONICETDig_bf13b9a90e5b8688a375c9f79e791fb1
oai_identifier_str oai:ri.conicet.gov.ar:11336/9745
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyesLeal Marchena, CandelariaGómez, Silvina del ValleSaux, ClaraPierella, Liliana BeatrizPizzio, Luis Renetungstophosphoric acidimmobilizedNH4ZSM5 zeolitephotocatalytic degradation of dyeshttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Materials based on tungstophosphoric acid (TPA) immobilized on NH4ZSM5 zeolite were prepared by wet impregnation of the zeolite matrix with TPA aqueous solutions. Their concentration was varied in order to obtain TPA contents of 5%, 10%, 20%, and 30% w/w in the solid. The materials were characterized by N2 adsorption-desorption isotherms, XRD, FT-IR, 31P MAS-NMR, TGA‑DSC, DRS-UV-Vis, and the acidic behavior was studied by potentiometric titration with n-butylamine. The BET surface area (SBET) decreased when the TPA content was raised as a result of zeolite pore blocking. The X-ray diffraction patterns of the solids modified with TPA only presented the characteristic peaks of NH4ZSM5 zeolites, and an additional set of peaks assigned to the presence of (NH4)3PW12O40. According to the Fourier transform infrared and 31P magic angle spinning-nuclear magnetic resonance spectra, the main species present in the samples was the [PW12O40]3- anion, which was partially transformed into the [P2W21O71]6- anion during the synthesis and drying steps. The thermal stability of the NH4ZSM5TPA materials was similar to that of their parent zeolites. Moreover, the samples with the highest TPA content exhibited band gap energy values similar to those reported for TiO2. The immobilization of TPA on NH4ZSM5 zeolite allowed the obtention of catalysts with high photocatalytic activity in the degradation of methyl orange dye (MO) in water, at 25 °C. These can be reused at least three times without any significant decrease in degree of degradation.Fil: Leal Marchena, Candelaria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; ArgentinaFil: Gómez, Silvina del Valle. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; ArgentinaFil: Saux, Clara. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; ArgentinaFil: Pierella, Liliana Beatriz. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; ArgentinaFil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas; ArgentinaSociedade Brasileira de Química2015-03-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/9745Leal Marchena, Candelaria; Gómez, Silvina del Valle; Saux, Clara; Pierella, Liliana Beatriz; Pizzio, Luis Rene; Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes; Sociedade Brasileira de Química; Química Nova; 38; 4; 5-3-2015; 518-5250100-40421678-7064enginfo:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/tchpwzinfo:eu-repo/semantics/altIdentifier/doi/10.5935/0100-4042.20150024info:eu-repo/semantics/altIdentifier/url/http://quimicanova.sbq.org.br/imagebank/pdf/v38n4a11.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:47:27Zoai:ri.conicet.gov.ar:11336/9745instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:47:27.933CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes
title Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes
spellingShingle Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes
Leal Marchena, Candelaria
tungstophosphoric acid
immobilized
NH4ZSM5 zeolite
photocatalytic degradation of dyes
title_short Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes
title_full Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes
title_fullStr Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes
title_full_unstemmed Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes
title_sort Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes
dc.creator.none.fl_str_mv Leal Marchena, Candelaria
Gómez, Silvina del Valle
Saux, Clara
Pierella, Liliana Beatriz
Pizzio, Luis Rene
author Leal Marchena, Candelaria
author_facet Leal Marchena, Candelaria
Gómez, Silvina del Valle
Saux, Clara
Pierella, Liliana Beatriz
Pizzio, Luis Rene
author_role author
author2 Gómez, Silvina del Valle
Saux, Clara
Pierella, Liliana Beatriz
Pizzio, Luis Rene
author2_role author
author
author
author
dc.subject.none.fl_str_mv tungstophosphoric acid
immobilized
NH4ZSM5 zeolite
photocatalytic degradation of dyes
topic tungstophosphoric acid
immobilized
NH4ZSM5 zeolite
photocatalytic degradation of dyes
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Materials based on tungstophosphoric acid (TPA) immobilized on NH4ZSM5 zeolite were prepared by wet impregnation of the zeolite matrix with TPA aqueous solutions. Their concentration was varied in order to obtain TPA contents of 5%, 10%, 20%, and 30% w/w in the solid. The materials were characterized by N2 adsorption-desorption isotherms, XRD, FT-IR, 31P MAS-NMR, TGA‑DSC, DRS-UV-Vis, and the acidic behavior was studied by potentiometric titration with n-butylamine. The BET surface area (SBET) decreased when the TPA content was raised as a result of zeolite pore blocking. The X-ray diffraction patterns of the solids modified with TPA only presented the characteristic peaks of NH4ZSM5 zeolites, and an additional set of peaks assigned to the presence of (NH4)3PW12O40. According to the Fourier transform infrared and 31P magic angle spinning-nuclear magnetic resonance spectra, the main species present in the samples was the [PW12O40]3- anion, which was partially transformed into the [P2W21O71]6- anion during the synthesis and drying steps. The thermal stability of the NH4ZSM5TPA materials was similar to that of their parent zeolites. Moreover, the samples with the highest TPA content exhibited band gap energy values similar to those reported for TiO2. The immobilization of TPA on NH4ZSM5 zeolite allowed the obtention of catalysts with high photocatalytic activity in the degradation of methyl orange dye (MO) in water, at 25 °C. These can be reused at least three times without any significant decrease in degree of degradation.
Fil: Leal Marchena, Candelaria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina
Fil: Gómez, Silvina del Valle. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina
Fil: Saux, Clara. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina
Fil: Pierella, Liliana Beatriz. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Centro de Investigacion y Tecnologia Quimica; Argentina
Fil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas; Argentina
description Materials based on tungstophosphoric acid (TPA) immobilized on NH4ZSM5 zeolite were prepared by wet impregnation of the zeolite matrix with TPA aqueous solutions. Their concentration was varied in order to obtain TPA contents of 5%, 10%, 20%, and 30% w/w in the solid. The materials were characterized by N2 adsorption-desorption isotherms, XRD, FT-IR, 31P MAS-NMR, TGA‑DSC, DRS-UV-Vis, and the acidic behavior was studied by potentiometric titration with n-butylamine. The BET surface area (SBET) decreased when the TPA content was raised as a result of zeolite pore blocking. The X-ray diffraction patterns of the solids modified with TPA only presented the characteristic peaks of NH4ZSM5 zeolites, and an additional set of peaks assigned to the presence of (NH4)3PW12O40. According to the Fourier transform infrared and 31P magic angle spinning-nuclear magnetic resonance spectra, the main species present in the samples was the [PW12O40]3- anion, which was partially transformed into the [P2W21O71]6- anion during the synthesis and drying steps. The thermal stability of the NH4ZSM5TPA materials was similar to that of their parent zeolites. Moreover, the samples with the highest TPA content exhibited band gap energy values similar to those reported for TiO2. The immobilization of TPA on NH4ZSM5 zeolite allowed the obtention of catalysts with high photocatalytic activity in the degradation of methyl orange dye (MO) in water, at 25 °C. These can be reused at least three times without any significant decrease in degree of degradation.
publishDate 2015
dc.date.none.fl_str_mv 2015-03-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/9745
Leal Marchena, Candelaria; Gómez, Silvina del Valle; Saux, Clara; Pierella, Liliana Beatriz; Pizzio, Luis Rene; Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes; Sociedade Brasileira de Química; Química Nova; 38; 4; 5-3-2015; 518-525
0100-4042
1678-7064
url http://hdl.handle.net/11336/9745
identifier_str_mv Leal Marchena, Candelaria; Gómez, Silvina del Valle; Saux, Clara; Pierella, Liliana Beatriz; Pizzio, Luis Rene; Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes; Sociedade Brasileira de Química; Química Nova; 38; 4; 5-3-2015; 518-525
0100-4042
1678-7064
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/tchpwz
info:eu-repo/semantics/altIdentifier/doi/10.5935/0100-4042.20150024
info:eu-repo/semantics/altIdentifier/url/http://quimicanova.sbq.org.br/imagebank/pdf/v38n4a11.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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