Interações entre corantes e argilas em suspensão aquosa

Detalhes bibliográficos
Autor(a) principal: Neumann,Miguel G.
Data de Publicação: 2000
Outros Autores: Gessner,Fergus, Cione,Ana P. P., Sartori,Rogério A., Cavalheiro,Carla C. Schmitt
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000600016
Resumo: Adsorption of cationic dyes on clays can be used as a model for the interactions between organic compounds and these minerals. Cationic dyes like methylene blue are used to study these interactions because of the spectroscopic changes observed when their molecules are adsorbed on clay surfaces. Depending on the structure and layer charge of the clay particles several processes may occur, like adsorption of dye monomers and aggregates on the external and internal surfaces of the clay tactoids, migration towards internal surfaces, protonation, etc. Under certain conditions the deaggregation-aggregation of the clay particles are accelerated trapping dye species during these processes. A general scheme is proposed for the processes occurring between clays and dyes in aqueous suspensions, which can be used to explain the behaviour of specific systems.
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spelling Interações entre corantes e argilas em suspensão aquosacationic dyesclaysclay-dye interactionsAdsorption of cationic dyes on clays can be used as a model for the interactions between organic compounds and these minerals. Cationic dyes like methylene blue are used to study these interactions because of the spectroscopic changes observed when their molecules are adsorbed on clay surfaces. Depending on the structure and layer charge of the clay particles several processes may occur, like adsorption of dye monomers and aggregates on the external and internal surfaces of the clay tactoids, migration towards internal surfaces, protonation, etc. Under certain conditions the deaggregation-aggregation of the clay particles are accelerated trapping dye species during these processes. A general scheme is proposed for the processes occurring between clays and dyes in aqueous suspensions, which can be used to explain the behaviour of specific systems.Sociedade Brasileira de Química2000-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000600016Química Nova v.23 n.6 2000reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422000000600016info:eu-repo/semantics/openAccessNeumann,Miguel G.Gessner,FergusCione,Ana P. P.Sartori,Rogério A.Cavalheiro,Carla C. Schmittpor2001-01-18T00:00:00Zoai:scielo:S0100-40422000000600016Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2001-01-18T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Interações entre corantes e argilas em suspensão aquosa
title Interações entre corantes e argilas em suspensão aquosa
spellingShingle Interações entre corantes e argilas em suspensão aquosa
Neumann,Miguel G.
cationic dyes
clays
clay-dye interactions
title_short Interações entre corantes e argilas em suspensão aquosa
title_full Interações entre corantes e argilas em suspensão aquosa
title_fullStr Interações entre corantes e argilas em suspensão aquosa
title_full_unstemmed Interações entre corantes e argilas em suspensão aquosa
title_sort Interações entre corantes e argilas em suspensão aquosa
author Neumann,Miguel G.
author_facet Neumann,Miguel G.
Gessner,Fergus
Cione,Ana P. P.
Sartori,Rogério A.
Cavalheiro,Carla C. Schmitt
author_role author
author2 Gessner,Fergus
Cione,Ana P. P.
Sartori,Rogério A.
Cavalheiro,Carla C. Schmitt
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Neumann,Miguel G.
Gessner,Fergus
Cione,Ana P. P.
Sartori,Rogério A.
Cavalheiro,Carla C. Schmitt
dc.subject.por.fl_str_mv cationic dyes
clays
clay-dye interactions
topic cationic dyes
clays
clay-dye interactions
description Adsorption of cationic dyes on clays can be used as a model for the interactions between organic compounds and these minerals. Cationic dyes like methylene blue are used to study these interactions because of the spectroscopic changes observed when their molecules are adsorbed on clay surfaces. Depending on the structure and layer charge of the clay particles several processes may occur, like adsorption of dye monomers and aggregates on the external and internal surfaces of the clay tactoids, migration towards internal surfaces, protonation, etc. Under certain conditions the deaggregation-aggregation of the clay particles are accelerated trapping dye species during these processes. A general scheme is proposed for the processes occurring between clays and dyes in aqueous suspensions, which can be used to explain the behaviour of specific systems.
publishDate 2000
dc.date.none.fl_str_mv 2000-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000600016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000600016
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422000000600016
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.23 n.6 2000
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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