Adsorption of reactive dyes on titania-silica mesoporous materials

Autores
Messina, Paula Verónica; Schulz, Pablo Carlos
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper presents a study on the adsorption of two basic dyes, methylene blue (MB) and rhodamine B (RhB), from aqueous solution onto mesoporous silica-titania materials. The effect of dye structure, adsorbent particle size, TiO2 presence, and temperature on adsorption was investigated. Adsorption data obtained at different solution temperatures (25, 35, and 45 °C) revealed an irreversible adsorption that decreased with the increment of T. The presence of TiO2 augmented the adsorption capacity ( qe ). This would be due to possible degradation of the dye molecule in contact with the TiO2 particles in the adsorbent interior. The adsorption enthalpy was relatively high, indicating that interaction between the sorbent and the adsorbate molecules was not only physical but chemical. Both Langmuir and Freundlich isotherm equations were applied to the experimental data. The obtained parameters and correlation coefficients showed that the adsorption of the two reactive dyes (MB and RhB) on the adsorbent systems at the three work temperatures was best predicted by the Langmuir isotherm, but not in all cases. The kinetic adsorption data were processed by the application of two simplified kinetic models, first and second order, to investigate the adsorption mechanism. It was found that the adsorption kinetics of methylene blue and rhodamine B onto the mesoporous silica-titania materials surface under different operating conditions was best described by the first-order model.
Fil: Messina, Paula Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Schulz, Pablo Carlos. Universidad Nacional del Sur. Departamento de Química; Argentina
Materia
ADSORPTION
DECONTAMINATION
ENERGETIC SURFACE HETEROGENEITY
ISOTHERMS
KINETICS
REACTIVE DYES
SILICA-TITANIA MESOPOROUS MATERIALS
SURFACTANT TEMPLATES
THERMODYNAMIC
TIO2 NANOPARTICLES
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:11336/95339
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/95339
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Adsorption of reactive dyes on titania-silica mesoporous materialsMessina, Paula VerónicaSchulz, Pablo CarlosADSORPTIONDECONTAMINATIONENERGETIC SURFACE HETEROGENEITYISOTHERMSKINETICSREACTIVE DYESSILICA-TITANIA MESOPOROUS MATERIALSSURFACTANT TEMPLATESTHERMODYNAMICTIO2 NANOPARTICLEShttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1This paper presents a study on the adsorption of two basic dyes, methylene blue (MB) and rhodamine B (RhB), from aqueous solution onto mesoporous silica-titania materials. The effect of dye structure, adsorbent particle size, TiO2 presence, and temperature on adsorption was investigated. Adsorption data obtained at different solution temperatures (25, 35, and 45 °C) revealed an irreversible adsorption that decreased with the increment of T. The presence of TiO2 augmented the adsorption capacity ( qe ). This would be due to possible degradation of the dye molecule in contact with the TiO2 particles in the adsorbent interior. The adsorption enthalpy was relatively high, indicating that interaction between the sorbent and the adsorbate molecules was not only physical but chemical. Both Langmuir and Freundlich isotherm equations were applied to the experimental data. The obtained parameters and correlation coefficients showed that the adsorption of the two reactive dyes (MB and RhB) on the adsorbent systems at the three work temperatures was best predicted by the Langmuir isotherm, but not in all cases. The kinetic adsorption data were processed by the application of two simplified kinetic models, first and second order, to investigate the adsorption mechanism. It was found that the adsorption kinetics of methylene blue and rhodamine B onto the mesoporous silica-titania materials surface under different operating conditions was best described by the first-order model.Fil: Messina, Paula Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Schulz, Pablo Carlos. Universidad Nacional del Sur. Departamento de Química; ArgentinaAcademic Press Inc Elsevier Science2006-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95339Messina, Paula Verónica; Schulz, Pablo Carlos; Adsorption of reactive dyes on titania-silica mesoporous materials; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 299; 1; 7-2006; 305-3200021-9797CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jcis.2006.01.039info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0021979706000452info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:34:41Zoai:ri.conicet.gov.ar:11336/95339instacron: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:34982025-09-29 10:34:41.77CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Adsorption of reactive dyes on titania-silica mesoporous materials
title Adsorption of reactive dyes on titania-silica mesoporous materials
spellingShingle Adsorption of reactive dyes on titania-silica mesoporous materials
Messina, Paula Verónica
ADSORPTION
DECONTAMINATION
ENERGETIC SURFACE HETEROGENEITY
ISOTHERMS
KINETICS
REACTIVE DYES
SILICA-TITANIA MESOPOROUS MATERIALS
SURFACTANT TEMPLATES
THERMODYNAMIC
TIO2 NANOPARTICLES
title_short Adsorption of reactive dyes on titania-silica mesoporous materials
title_full Adsorption of reactive dyes on titania-silica mesoporous materials
title_fullStr Adsorption of reactive dyes on titania-silica mesoporous materials
title_full_unstemmed Adsorption of reactive dyes on titania-silica mesoporous materials
title_sort Adsorption of reactive dyes on titania-silica mesoporous materials
dc.creator.none.fl_str_mv Messina, Paula Verónica
Schulz, Pablo Carlos
author Messina, Paula Verónica
author_facet Messina, Paula Verónica
Schulz, Pablo Carlos
author_role author
author2 Schulz, Pablo Carlos
author2_role author
dc.subject.none.fl_str_mv ADSORPTION
DECONTAMINATION
ENERGETIC SURFACE HETEROGENEITY
ISOTHERMS
KINETICS
REACTIVE DYES
SILICA-TITANIA MESOPOROUS MATERIALS
SURFACTANT TEMPLATES
THERMODYNAMIC
TIO2 NANOPARTICLES
topic ADSORPTION
DECONTAMINATION
ENERGETIC SURFACE HETEROGENEITY
ISOTHERMS
KINETICS
REACTIVE DYES
SILICA-TITANIA MESOPOROUS MATERIALS
SURFACTANT TEMPLATES
THERMODYNAMIC
TIO2 NANOPARTICLES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This paper presents a study on the adsorption of two basic dyes, methylene blue (MB) and rhodamine B (RhB), from aqueous solution onto mesoporous silica-titania materials. The effect of dye structure, adsorbent particle size, TiO2 presence, and temperature on adsorption was investigated. Adsorption data obtained at different solution temperatures (25, 35, and 45 °C) revealed an irreversible adsorption that decreased with the increment of T. The presence of TiO2 augmented the adsorption capacity ( qe ). This would be due to possible degradation of the dye molecule in contact with the TiO2 particles in the adsorbent interior. The adsorption enthalpy was relatively high, indicating that interaction between the sorbent and the adsorbate molecules was not only physical but chemical. Both Langmuir and Freundlich isotherm equations were applied to the experimental data. The obtained parameters and correlation coefficients showed that the adsorption of the two reactive dyes (MB and RhB) on the adsorbent systems at the three work temperatures was best predicted by the Langmuir isotherm, but not in all cases. The kinetic adsorption data were processed by the application of two simplified kinetic models, first and second order, to investigate the adsorption mechanism. It was found that the adsorption kinetics of methylene blue and rhodamine B onto the mesoporous silica-titania materials surface under different operating conditions was best described by the first-order model.
Fil: Messina, Paula Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
Fil: Schulz, Pablo Carlos. Universidad Nacional del Sur. Departamento de Química; Argentina
description This paper presents a study on the adsorption of two basic dyes, methylene blue (MB) and rhodamine B (RhB), from aqueous solution onto mesoporous silica-titania materials. The effect of dye structure, adsorbent particle size, TiO2 presence, and temperature on adsorption was investigated. Adsorption data obtained at different solution temperatures (25, 35, and 45 °C) revealed an irreversible adsorption that decreased with the increment of T. The presence of TiO2 augmented the adsorption capacity ( qe ). This would be due to possible degradation of the dye molecule in contact with the TiO2 particles in the adsorbent interior. The adsorption enthalpy was relatively high, indicating that interaction between the sorbent and the adsorbate molecules was not only physical but chemical. Both Langmuir and Freundlich isotherm equations were applied to the experimental data. The obtained parameters and correlation coefficients showed that the adsorption of the two reactive dyes (MB and RhB) on the adsorbent systems at the three work temperatures was best predicted by the Langmuir isotherm, but not in all cases. The kinetic adsorption data were processed by the application of two simplified kinetic models, first and second order, to investigate the adsorption mechanism. It was found that the adsorption kinetics of methylene blue and rhodamine B onto the mesoporous silica-titania materials surface under different operating conditions was best described by the first-order model.
publishDate 2006
dc.date.none.fl_str_mv 2006-07
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/11336/95339
Messina, Paula Verónica; Schulz, Pablo Carlos; Adsorption of reactive dyes on titania-silica mesoporous materials; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 299; 1; 7-2006; 305-320
0021-9797
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95339
identifier_str_mv Messina, Paula Verónica; Schulz, Pablo Carlos; Adsorption of reactive dyes on titania-silica mesoporous materials; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 299; 1; 7-2006; 305-320
0021-9797
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jcis.2006.01.039
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0021979706000452
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 Academic Press Inc Elsevier Science
publisher.none.fl_str_mv Academic Press Inc Elsevier Science
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 13.070432

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