Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water
- Autores
- Danil De Namor, Angela F.; Zvietcovich Guerra, Jorge A.; Villanueva Salas, Jose A.; Piro, Oscar Enrique; Webb, Oliver A.; El Gamouz, Abdelaziz; Hamdan, Weam Abou; Castellano, Eduardo E.
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Two molecular receptors based on calix[4]arenes and their interaction with chlorophenoxy acid herbicides in solution and in the solid state have been investigated. From 1H NMR studies it is shown that the conformational changes of the receptor are directly related to the acid strength of the herbicide. Conductance data show that the interaction takes place through a proton transfer reaction from the herbicide to the receptor. This is also reflected in the solid state (X-ray crystallography). Based on these fundamental studies, these receptors were immobilised by grafting them into a silica based solid support. The extracting properties of calix[4]arene modified silica for these pollutants were investigated as a function of the pH of the aqueous solution and the capacities of these materials to remove these pollutants are reported. Titration calorimetry is for the first time explored to determine the factors (kinetics, mass/solution ratio and temperature) contributing to the optimal removal of herbicides from water. These materials can be easily recycled via a pH switching mechanism. After several recycling processes the extraction capacity of these materials remains at the level of 80-90% of the original value.
Fil: Danil De Namor, Angela F.. University Of Surrey; Reino Unido
Fil: Zvietcovich Guerra, Jorge A.. University Of Surrey; Reino Unido
Fil: Villanueva Salas, Jose A.. University Of Surrey; Reino Unido
Fil: Piro, Oscar Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Webb, Oliver A.. University Of Surrey; Reino Unido
Fil: El Gamouz, Abdelaziz. University Of Surrey; Reino Unido
Fil: Hamdan, Weam Abou. University Of Surrey; Reino Unido
Fil: Castellano, Eduardo E.. Universidade de Sao Paulo; Brasil - Materia
-
ESTRUCTURAL X-RAY DIFFRACTION
1H-NMR AND FT-IR SPECTROSCOPY
CALORIMETRY
CONDUCTANCE
EXTRACTION - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/100198
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
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Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from waterDanil De Namor, Angela F.Zvietcovich Guerra, Jorge A.Villanueva Salas, Jose A.Piro, Oscar EnriqueWebb, Oliver A.El Gamouz, AbdelazizHamdan, Weam AbouCastellano, Eduardo E.ESTRUCTURAL X-RAY DIFFRACTION1H-NMR AND FT-IR SPECTROSCOPYCALORIMETRYCONDUCTANCEEXTRACTIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Two molecular receptors based on calix[4]arenes and their interaction with chlorophenoxy acid herbicides in solution and in the solid state have been investigated. From 1H NMR studies it is shown that the conformational changes of the receptor are directly related to the acid strength of the herbicide. Conductance data show that the interaction takes place through a proton transfer reaction from the herbicide to the receptor. This is also reflected in the solid state (X-ray crystallography). Based on these fundamental studies, these receptors were immobilised by grafting them into a silica based solid support. The extracting properties of calix[4]arene modified silica for these pollutants were investigated as a function of the pH of the aqueous solution and the capacities of these materials to remove these pollutants are reported. Titration calorimetry is for the first time explored to determine the factors (kinetics, mass/solution ratio and temperature) contributing to the optimal removal of herbicides from water. These materials can be easily recycled via a pH switching mechanism. After several recycling processes the extraction capacity of these materials remains at the level of 80-90% of the original value.Fil: Danil De Namor, Angela F.. University Of Surrey; Reino UnidoFil: Zvietcovich Guerra, Jorge A.. University Of Surrey; Reino UnidoFil: Villanueva Salas, Jose A.. University Of Surrey; Reino UnidoFil: Piro, Oscar Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Webb, Oliver A.. University Of Surrey; Reino UnidoFil: El Gamouz, Abdelaziz. University Of Surrey; Reino UnidoFil: Hamdan, Weam Abou. University Of Surrey; Reino UnidoFil: Castellano, Eduardo E.. Universidade de Sao Paulo; BrasilRoyal Society of Chemistry2015-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/100198Danil De Namor, Angela F.; Zvietcovich Guerra, Jorge A.; Villanueva Salas, Jose A.; Piro, Oscar Enrique; Webb, Oliver A.; et al.; Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water; Royal Society of Chemistry; RSC Advances; 5; 42; 3-2015; 33524-335352046-2069CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/C5RA02551Finfo:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2015/RA/C5RA02551Finfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:44:38Zoai:ri.conicet.gov.ar:11336/100198instacron: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 09:44:38.649CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water |
title |
Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water |
spellingShingle |
Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water Danil De Namor, Angela F. ESTRUCTURAL X-RAY DIFFRACTION 1H-NMR AND FT-IR SPECTROSCOPY CALORIMETRY CONDUCTANCE EXTRACTION |
title_short |
Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water |
title_full |
Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water |
title_fullStr |
Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water |
title_full_unstemmed |
Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water |
title_sort |
Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water |
dc.creator.none.fl_str_mv |
Danil De Namor, Angela F. Zvietcovich Guerra, Jorge A. Villanueva Salas, Jose A. Piro, Oscar Enrique Webb, Oliver A. El Gamouz, Abdelaziz Hamdan, Weam Abou Castellano, Eduardo E. |
author |
Danil De Namor, Angela F. |
author_facet |
Danil De Namor, Angela F. Zvietcovich Guerra, Jorge A. Villanueva Salas, Jose A. Piro, Oscar Enrique Webb, Oliver A. El Gamouz, Abdelaziz Hamdan, Weam Abou Castellano, Eduardo E. |
author_role |
author |
author2 |
Zvietcovich Guerra, Jorge A. Villanueva Salas, Jose A. Piro, Oscar Enrique Webb, Oliver A. El Gamouz, Abdelaziz Hamdan, Weam Abou Castellano, Eduardo E. |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
ESTRUCTURAL X-RAY DIFFRACTION 1H-NMR AND FT-IR SPECTROSCOPY CALORIMETRY CONDUCTANCE EXTRACTION |
topic |
ESTRUCTURAL X-RAY DIFFRACTION 1H-NMR AND FT-IR SPECTROSCOPY CALORIMETRY CONDUCTANCE EXTRACTION |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Two molecular receptors based on calix[4]arenes and their interaction with chlorophenoxy acid herbicides in solution and in the solid state have been investigated. From 1H NMR studies it is shown that the conformational changes of the receptor are directly related to the acid strength of the herbicide. Conductance data show that the interaction takes place through a proton transfer reaction from the herbicide to the receptor. This is also reflected in the solid state (X-ray crystallography). Based on these fundamental studies, these receptors were immobilised by grafting them into a silica based solid support. The extracting properties of calix[4]arene modified silica for these pollutants were investigated as a function of the pH of the aqueous solution and the capacities of these materials to remove these pollutants are reported. Titration calorimetry is for the first time explored to determine the factors (kinetics, mass/solution ratio and temperature) contributing to the optimal removal of herbicides from water. These materials can be easily recycled via a pH switching mechanism. After several recycling processes the extraction capacity of these materials remains at the level of 80-90% of the original value. Fil: Danil De Namor, Angela F.. University Of Surrey; Reino Unido Fil: Zvietcovich Guerra, Jorge A.. University Of Surrey; Reino Unido Fil: Villanueva Salas, Jose A.. University Of Surrey; Reino Unido Fil: Piro, Oscar Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina Fil: Webb, Oliver A.. University Of Surrey; Reino Unido Fil: El Gamouz, Abdelaziz. University Of Surrey; Reino Unido Fil: Hamdan, Weam Abou. University Of Surrey; Reino Unido Fil: Castellano, Eduardo E.. Universidade de Sao Paulo; Brasil |
description |
Two molecular receptors based on calix[4]arenes and their interaction with chlorophenoxy acid herbicides in solution and in the solid state have been investigated. From 1H NMR studies it is shown that the conformational changes of the receptor are directly related to the acid strength of the herbicide. Conductance data show that the interaction takes place through a proton transfer reaction from the herbicide to the receptor. This is also reflected in the solid state (X-ray crystallography). Based on these fundamental studies, these receptors were immobilised by grafting them into a silica based solid support. The extracting properties of calix[4]arene modified silica for these pollutants were investigated as a function of the pH of the aqueous solution and the capacities of these materials to remove these pollutants are reported. Titration calorimetry is for the first time explored to determine the factors (kinetics, mass/solution ratio and temperature) contributing to the optimal removal of herbicides from water. These materials can be easily recycled via a pH switching mechanism. After several recycling processes the extraction capacity of these materials remains at the level of 80-90% of the original value. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-03 |
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/11336/100198 Danil De Namor, Angela F.; Zvietcovich Guerra, Jorge A.; Villanueva Salas, Jose A.; Piro, Oscar Enrique; Webb, Oliver A.; et al.; Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water; Royal Society of Chemistry; RSC Advances; 5; 42; 3-2015; 33524-33535 2046-2069 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/100198 |
identifier_str_mv |
Danil De Namor, Angela F.; Zvietcovich Guerra, Jorge A.; Villanueva Salas, Jose A.; Piro, Oscar Enrique; Webb, Oliver A.; et al.; Calix[4]arene amine modified silica: From fundamentals to new recyclable materials for the removal of chlorophenoxy acids from water; Royal Society of Chemistry; RSC Advances; 5; 42; 3-2015; 33524-33535 2046-2069 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1039/C5RA02551F info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2015/RA/C5RA02551F |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Royal Society of Chemistry |
publisher.none.fl_str_mv |
Royal Society of Chemistry |
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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1844613404378005504 |
score |
13.070432 |