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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/95339
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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 Técnicas2025-09-03T10:07:47Zoai: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:34982025-09-03 10:07:47.475CONICET 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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1842270017762099200 |
score |
13.13397 |