Layer-by-Layer Films Based on Carbon Nanotubes and Polyaniline for Detecting 2-Chlorophenol

Layer-by-Layer Films Based on Carbon Nanotubes and Polyaniline for Detecting 2-Chlorophenol

Author Silva, Juliana S. Google Scholar
Barros, Anerise de Google Scholar
Constantino, Carlos J. L. Google Scholar
Simões, Fabio Ruiz Autor UNIFESP Google Scholar
Ferreira, Marystela Google Scholar
Institution Universidade Federal de São Carlos (UFSCar)
Universidade de São Paulo (USP)
Univ Estadual Paulista
Universidade Federal de São Paulo (UNIFESP)
Abstract Electrochemical sensors made with layer-by-layer (LbL) films of functionalized multi-walled carbon nanotubes (MWCNT5-COO-) and polyaniline (PAni) deposited onto ITO substrates were used to detect 2-chlorophenol. Concentrations down to ppm level could be detected with square wave voltammetry (SWV), owing to synergistic effects between PAni and nanotubes, whose molecular-level interactions in the LbL films were inferred using FTIR and Raman spectroscopy. Significantly, the Raman spectra of MWCNTs-COO-/PAni LbL films indicated that the conducting properties of PAni were preserved upon adsorption on the ITO substrates, with homogeneous nanocomposites being formed according to Scanning Electron Microscopy (SEM) images.
Keywords Layer-by-Layer Films
PAni
Multi Walled Carbon Nanotubes
2-Chrophenol Sensors
Electrochemical Sensors
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Date 2014-09-01
Published in Journal of Nanoscience and Nanotechnology. Valencia: Amer Scientific Publishers, v. 14, n. 9, p. 6586-6592, 2014.
ISSN 1533-4880 (Sherpa/Romeo, impact factor)
Publisher Amer Scientific Publishers
Extent 6586-6592
Origin http://dx.doi.org/10.1166/jnn.2014.9376
Access rights Closed access
Type Article
Web of Science ID WOS:000335873900012
URI http://repositorio.unifesp.br/handle/11600/38200

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