Immobilization of humic acid in nanostructured layer-by-layer films for sensing applications

dc.contributorUniversidade de São Paulo (USP)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:29:07Z
dc.date.accessioned2022-10-05T16:52:15Z
dc.date.available2014-05-20T15:29:07Z
dc.date.available2022-10-05T16:52:15Z
dc.date.created2014-05-20T15:29:07Z
dc.date.issued2005-07-15
dc.identifierEnvironmental Science & Technology. Washington: Amer Chemical Soc, v. 39, n. 14, p. 5385-5389, 2005.
dc.identifier0013-936X
dc.identifierhttp://hdl.handle.net/11449/38773
dc.identifier10.1021/es050552n
dc.identifierWOS:000230536200041
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3910028
dc.description.abstractHumic acids (HAs), naturally occurring biomacromolecules, were incorporated into nanostructured polymeric films using the layer-by-layer (LbL) technique, in which HA layers were alternated with layers of poly(allylamine hydrochloride) (PAH). Atomic force microscopy (AFM) revealed very smooth films, with mean roughness varying from 0.89 to 1.19 nm for films containing 5 and 15 PAH/HA bilayers, respectively. The films displayed electroactivity, with the presence of only one reduction peak at ca. 0.675 V (vs Ag/AgCl). Such a well-defined electroactivity allowed the films to be used as highly sensitive pesticide sensors, with detection of pentachlorophenol (PCP) in solutions at concentrations as low as 10(-9) mol L(-1).
dc.languageeng
dc.publisherAmer Chemical Soc
dc.relationEnvironmental Science & Technology
dc.relation6.653
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.titleImmobilization of humic acid in nanostructured layer-by-layer films for sensing applications
dc.typeArtigo


Este ítem pertenece a la siguiente institución