Layered inorganic/organic mercaptopropyl pendant chain hybrid for chelating heavy cations

dc.creatorMacedo, TR
dc.creatorPetrucelli, GC
dc.creatorPinto, AA
dc.creatorAiroldi, C
dc.date2011
dc.dateDEC
dc.date2014-08-01T18:33:31Z
dc.date2015-11-26T17:05:40Z
dc.date2014-08-01T18:33:31Z
dc.date2015-11-26T17:05:40Z
dc.date.accessioned2018-03-28T23:54:01Z
dc.date.available2018-03-28T23:54:01Z
dc.identifierMaterials Research Bulletin. Pergamon-elsevier Science Ltd, v. 46, n. 12, n. 2346, n. 2352, 2011.
dc.identifier0025-5408
dc.identifierWOS:000298130000029
dc.identifier10.1016/j.materresbull.2011.08.042
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/80769
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/80769
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1279644
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionHeavy metal sorbents with uptake capacities for divalent cadmium and lead cation removal from aqueous solutions have been synthesized by grafting mercaptopropyltrimethoxysilane onto the surface of two different precursors obtained from lamellar ilerite, its acidic and the cetyltrimethylammonium exchanged forms. The organofunctionalization was carried out by two different procedures: reflux and solvent evaporation methodologies. Elemental analysis data based on carbon content gave 1.37 and 3.53 mmol of organic pendant groups per gram of hybrid by the reflux method, when starting from acidic ilerite and the surfactant form. X-ray diffraction corroborated the maintenance of the original crystallinity. Infrared spectroscopy and nuclear magnetic resonance for (29)Si and (13)C nuclei are in agreement with the success of the proposed method. The sulfur basic centers attached to the lamellar structure are used to coordinate both cations at the solid/liquid interface. The isotherms were obtained through the batchwise process and the experimental data were adjusted to the Freundlich model. The maximum sorption capacities of 5.55 and 5.12 mmol g(-1) for lead and 6.10 and 7.10 mmol g(-1) for cadmium were obtained for organofunctionalized ilerite and its surfactant form, synthesized by reflux methodology. This behavior suggested that these hybrids could be employed as promising sorbents with a polluted system. (C) 2011 Elsevier Ltd. All rights reserved.
dc.description46
dc.description12
dc.description2346
dc.description2352
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationMaterials Research Bulletin
dc.relationMater. Res. Bull.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectInorganic compounds
dc.subjectLayered compounds
dc.subjectStructural materials
dc.subjectChemical synthesis
dc.subjectIntercalation reactions
dc.subjectSilylated Derivatives
dc.subjectSilicic-acid
dc.subjectMetal-ions
dc.subjectMagadiite
dc.subjectOctosilicate
dc.subjectAdsorption
dc.subjectKenyaite
dc.subjectSodium
dc.subjectIntercalation
dc.subjectSilicates
dc.titleLayered inorganic/organic mercaptopropyl pendant chain hybrid for chelating heavy cations
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución