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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/100198
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/100198
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 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 Técnicas2025-10-22T11:13:28Zoai: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:34982025-10-22 11:13:28.294CONICET 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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score 12.982451

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