Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water

Autores
Fellenz, Nicolás Antonio; Martin, Pedro Pablo; Marchetti, Sergio Gustavo; Bengoa, Jose Fernando
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aminopropyl-functionalized mesoporous silica spherical particles were obtained through post-synthetic route. The suitability of this material as an adsorbent for heavy metals from aqueous media was tested by Cr(VI) adsorption experiments performed at various pH conditions, chromium concentrations and time. The synthesized particles were characterized before and after functionalization by X-ray diffraction at low angles,nitrogen adsorption?desorption isotherms, infrared Fourier transform spectroscopy, scanning electron microscopy and thermogravimetric analysis. It was found that Cr(VI) adsorption occurs more efficiently in the pH range between 2 and 3. As a consequence of the nanometer scale of the particles, concentration profiles do not develop inside of them and thus there are no diffusional restrictions within the pores, leading to a higher Cr(VI) adsorption than that previously reported for similar systems. Chromium desorption for material reutilization was carried out in basic media. Results showed that the amino groups were grafted successfully without mesostructure damage. These groups are essential for the metal ion removal and no significant leaching was observed after fouruse/regeneration/use cycles. The batch equilibrium data fitted well the Langmuir isotherm with a maximum adsorption capacity of 87.1 mg/g at 25ºC. A discussion about the relationship between structure and its behavior as adsorbent, including regeneration and reusability, is given.
Fil: Fellenz, Nicolás Antonio. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte; Argentina
Fil: Martin, Pedro Pablo. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte; Argentina
Fil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Bengoa, Jose Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Materia
Ordered Mesoporous Silica
Spherical Particles
Adsorption
Hexavalent Crhomium
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:11336/5445
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/5445
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from waterFellenz, Nicolás AntonioMartin, Pedro PabloMarchetti, Sergio GustavoBengoa, Jose FernandoOrdered Mesoporous SilicaSpherical ParticlesAdsorptionHexavalent Crhomiumhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Aminopropyl-functionalized mesoporous silica spherical particles were obtained through post-synthetic route. The suitability of this material as an adsorbent for heavy metals from aqueous media was tested by Cr(VI) adsorption experiments performed at various pH conditions, chromium concentrations and time. The synthesized particles were characterized before and after functionalization by X-ray diffraction at low angles,nitrogen adsorption?desorption isotherms, infrared Fourier transform spectroscopy, scanning electron microscopy and thermogravimetric analysis. It was found that Cr(VI) adsorption occurs more efficiently in the pH range between 2 and 3. As a consequence of the nanometer scale of the particles, concentration profiles do not develop inside of them and thus there are no diffusional restrictions within the pores, leading to a higher Cr(VI) adsorption than that previously reported for similar systems. Chromium desorption for material reutilization was carried out in basic media. Results showed that the amino groups were grafted successfully without mesostructure damage. These groups are essential for the metal ion removal and no significant leaching was observed after fouruse/regeneration/use cycles. The batch equilibrium data fitted well the Langmuir isotherm with a maximum adsorption capacity of 87.1 mg/g at 25ºC. A discussion about the relationship between structure and its behavior as adsorbent, including regeneration and reusability, is given.Fil: Fellenz, Nicolás Antonio. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte; ArgentinaFil: Martin, Pedro Pablo. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte; ArgentinaFil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Bengoa, Jose Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaSpringer2015-03-19info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5445Fellenz, Nicolás Antonio; Martin, Pedro Pablo; Marchetti, Sergio Gustavo; Bengoa, Jose Fernando; Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water; Springer; Journal of Porous Materials; 22; 3; 19-3-2015; 729-7381380-22241573-4854enginfo:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs10934-015-9946-4info:eu-repo/semantics/altIdentifier/doi/10.1007/s10934-015-9946-4info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:02:26Zoai:ri.conicet.gov.ar:11336/5445instacron: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 10:02:26.695CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water
title Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water
spellingShingle Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water
Fellenz, Nicolás Antonio
Ordered Mesoporous Silica
Spherical Particles
Adsorption
Hexavalent Crhomium
title_short Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water
title_full Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water
title_fullStr Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water
title_full_unstemmed Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water
title_sort Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water
dc.creator.none.fl_str_mv Fellenz, Nicolás Antonio
Martin, Pedro Pablo
Marchetti, Sergio Gustavo
Bengoa, Jose Fernando
author Fellenz, Nicolás Antonio
author_facet Fellenz, Nicolás Antonio
Martin, Pedro Pablo
Marchetti, Sergio Gustavo
Bengoa, Jose Fernando
author_role author
author2 Martin, Pedro Pablo
Marchetti, Sergio Gustavo
Bengoa, Jose Fernando
author2_role author
author
author
dc.subject.none.fl_str_mv Ordered Mesoporous Silica
Spherical Particles
Adsorption
Hexavalent Crhomium
topic Ordered Mesoporous Silica
Spherical Particles
Adsorption
Hexavalent Crhomium
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Aminopropyl-functionalized mesoporous silica spherical particles were obtained through post-synthetic route. The suitability of this material as an adsorbent for heavy metals from aqueous media was tested by Cr(VI) adsorption experiments performed at various pH conditions, chromium concentrations and time. The synthesized particles were characterized before and after functionalization by X-ray diffraction at low angles,nitrogen adsorption?desorption isotherms, infrared Fourier transform spectroscopy, scanning electron microscopy and thermogravimetric analysis. It was found that Cr(VI) adsorption occurs more efficiently in the pH range between 2 and 3. As a consequence of the nanometer scale of the particles, concentration profiles do not develop inside of them and thus there are no diffusional restrictions within the pores, leading to a higher Cr(VI) adsorption than that previously reported for similar systems. Chromium desorption for material reutilization was carried out in basic media. Results showed that the amino groups were grafted successfully without mesostructure damage. These groups are essential for the metal ion removal and no significant leaching was observed after fouruse/regeneration/use cycles. The batch equilibrium data fitted well the Langmuir isotherm with a maximum adsorption capacity of 87.1 mg/g at 25ºC. A discussion about the relationship between structure and its behavior as adsorbent, including regeneration and reusability, is given.
Fil: Fellenz, Nicolás Antonio. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte; Argentina
Fil: Martin, Pedro Pablo. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte; Argentina
Fil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Bengoa, Jose Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
description Aminopropyl-functionalized mesoporous silica spherical particles were obtained through post-synthetic route. The suitability of this material as an adsorbent for heavy metals from aqueous media was tested by Cr(VI) adsorption experiments performed at various pH conditions, chromium concentrations and time. The synthesized particles were characterized before and after functionalization by X-ray diffraction at low angles,nitrogen adsorption?desorption isotherms, infrared Fourier transform spectroscopy, scanning electron microscopy and thermogravimetric analysis. It was found that Cr(VI) adsorption occurs more efficiently in the pH range between 2 and 3. As a consequence of the nanometer scale of the particles, concentration profiles do not develop inside of them and thus there are no diffusional restrictions within the pores, leading to a higher Cr(VI) adsorption than that previously reported for similar systems. Chromium desorption for material reutilization was carried out in basic media. Results showed that the amino groups were grafted successfully without mesostructure damage. These groups are essential for the metal ion removal and no significant leaching was observed after fouruse/regeneration/use cycles. The batch equilibrium data fitted well the Langmuir isotherm with a maximum adsorption capacity of 87.1 mg/g at 25ºC. A discussion about the relationship between structure and its behavior as adsorbent, including regeneration and reusability, is given.
publishDate 2015
dc.date.none.fl_str_mv 2015-03-19
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/11336/5445
Fellenz, Nicolás Antonio; Martin, Pedro Pablo; Marchetti, Sergio Gustavo; Bengoa, Jose Fernando; Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water; Springer; Journal of Porous Materials; 22; 3; 19-3-2015; 729-738
1380-2224
1573-4854
url http://hdl.handle.net/11336/5445
identifier_str_mv Fellenz, Nicolás Antonio; Martin, Pedro Pablo; Marchetti, Sergio Gustavo; Bengoa, Jose Fernando; Aminopropyl-modified mesoporous silica nanospheres for the adsorption of Cr(VI) from water; Springer; Journal of Porous Materials; 22; 3; 19-3-2015; 729-738
1380-2224
1573-4854
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs10934-015-9946-4
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10934-015-9946-4
info:eu-repo/semantics/altIdentifier/doi/
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
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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
_version_ 1842269755300380672
score 13.13397

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