Hydroxyapatite organofunctionalized with silylating agents to heavy cation removal

dc.creatorda Silva, OG
dc.creatorda Silva, EC
dc.creatorda Fonseca, MG
dc.creatorArakaki, LNH
dc.creatorAiroldi, C
dc.date2006
dc.dateOCT 15
dc.date2014-11-14T04:59:32Z
dc.date2015-11-26T16:04:32Z
dc.date2014-11-14T04:59:32Z
dc.date2015-11-26T16:04:32Z
dc.date.accessioned2018-03-28T22:53:38Z
dc.date.available2018-03-28T22:53:38Z
dc.identifierJournal Of Colloid And Interface Science. Academic Press Inc Elsevier Science, v. 302, n. 2, n. 485, n. 491, 2006.
dc.identifier0021-9797
dc.identifierWOS:000240747600012
dc.identifier10.1016/j.jcis.2006.07.010
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/69037
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/69037
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/69037
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1265507
dc.descriptionHydroxyapatite surface silylation with organosilane derivatives (H(3)CObSiR, R being the corresponding organic moieties -CH2CH2CH2NH,), -CH2CH2CH2NHCH2CH2NH2, and -CH2CH2CH2NHCH2CH2NHCH2CH2NH2, was carried out to yield organofunctionalized nanomaterials, named HApR1, HApR2. and HApR3, respectively. The products were characterized by elemental analysis, infrared spectroscopy, X-ray diffraction. thermogravimetry, and P-31 and C-13 NMR in the solid state. The amounts of groups grafted onto surfaces were 0.75 +/- 0.05, 2.35 +/- 0.14, and 2.48 +/- 10.18 mmol g(-1) for HApRx (x = 1,2, 3) surfaces, respectively. Linear correlations between elemental analysis, mass loss, 31 p chemical shift data, and the characteristics of the chain of each alkoxysilane were observed. The organic basic centers distributed onto the external surface have the ability to adsorb divalent copper and cobalt cations from aqueous solution. The degree of adsorption obtained from batchwise processes showed the best performance of these synthesized nanomaterials when compared with the pristine hydroxyapatite. (c) 2006 Elsevier Inc. All rights reserved.
dc.description302
dc.description2
dc.description485
dc.description491
dc.languageen
dc.publisherAcademic Press Inc Elsevier Science
dc.publisherSan Diego
dc.publisherEUA
dc.relationJournal Of Colloid And Interface Science
dc.relationJ. Colloid Interface Sci.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectorganofunctionalization
dc.subjectalkoxysilanes
dc.subjectadsorption
dc.subjecthydroxyapatite
dc.subjectAqueous-solutions
dc.subjectIons
dc.subjectImmobilization
dc.subjectAdsorption
dc.titleHydroxyapatite organofunctionalized with silylating agents to heavy cation removal
dc.typeArtículos de revistas


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