Direct Synthesis of Ag Nanoparticles Incorporated on a Mesoporous Hybrid Material as a Sensitive Sensor for the Simultaneous Determination of Dihydroxybenzenes Isomers

dc.creatorCanevari, TC
dc.creatorRaymundo-Pereira, PA
dc.creatorLanders, R
dc.creatorMachado, SAS
dc.date2013
dc.date41214
dc.date2014-08-01T18:29:19Z
dc.date2015-11-26T18:04:33Z
dc.date2014-08-01T18:29:19Z
dc.date2015-11-26T18:04:33Z
dc.date.accessioned2018-03-29T00:46:42Z
dc.date.available2018-03-29T00:46:42Z
dc.identifierEuropean Journal Of Inorganic Chemistry. Wiley-v C H Verlag Gmbh, v. 2013, n. 33, n. 5746, n. 5754, 2013.
dc.identifier1434-1948
dc.identifier1099-0682
dc.identifierWOS:000326749100016
dc.identifier10.1002/ejic.201300879
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/79602
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/79602
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1292883
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThis paper describes the synthesis, characterization, and applications of a mesoporous silica/ multiwalled carbon nanotube (SiO2/MWCNT) hybrid material, which was obtained by a sol-gel process and decorated with silver nanoparticles (AgNPs) ranging in size from 5 to 8 nm. The AgNPs were prepared directly on the surface of the SiO2/MWCNTs material by using N,N-dimethylformamide (DMF) as the reducing agent, and the resulting material was designated Ag/SiO2/MWCNT. The Ag/SiO2/MWCNT material was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), high-resolution transmission electron microscopy (HR-TEM), and X-ray photoelectron spectroscopy (XPS). A glassy carbon electrode, modified with the Ag/SiO2/MWCNT material, was used in the development of a sensitive electrochemical sensor for the determination of hydroquinone and catechol in the presence of resorcinol by squarewave voltammetry. Well-defined and separate oxidation peaks were observed in phosphate buffer solution (PBS) at pH 7. The Ag/SiO2/MWCNT-modified electrode exhibited high sensitivity for the simultaneous determination of hydroquinone and catechol in the presence of resorcinol, and the limits of detection for hydroquinone and catechol are 0.0117 and 0.0121 M, respectively. No significant interference was seen for 2,6-dichloroindophenol, phenol, 4-nitrophenol, and nitrite ions in the detection of dihydroxybenzenes. Our study demonstrates that the resultant Ag/SiO2/MWCNT-modified electrode can be used for hydroquinone and catechol detection in the presence of resorcinol and other potentially interfering materials in river water samples.
dc.description2013
dc.description33
dc.description5746
dc.description5754
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFAPESP [2011/23047-7, 2012/17689-9]
dc.languageen
dc.publisherWiley-v C H Verlag Gmbh
dc.publisherWeinheim
dc.publisherAlemanha
dc.relationEuropean Journal Of Inorganic Chemistry
dc.relationEur. J. Inorg. Chem.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectNanoparticles
dc.subjectHybrid materials
dc.subjectSensors
dc.subjectSilver
dc.subjectDihydroxybenzenes
dc.subjectMultiwall Carbon Nanotubes
dc.subjectSilver Nanoparticles
dc.subjectGraphene Oxide
dc.subjectElectrochemical Sensors
dc.subjectPhenolic-compounds
dc.subjectCatechol
dc.subjectHydroquinone
dc.subjectResorcinol
dc.subjectElectrode
dc.subjectComposite
dc.titleDirect Synthesis of Ag Nanoparticles Incorporated on a Mesoporous Hybrid Material as a Sensitive Sensor for the Simultaneous Determination of Dihydroxybenzenes Isomers
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución