Carbon nanotubes modified with antimony nanoparticles: A novel material for electrochemical sensing

Autor(es)

Moraes, Fernando C. ^[1] ; Cesarino, Ivana ^[1] ; Cesarino, Vivian ^[1] ; Mascaro, Lucia H. ^[2] ; Machado, Sergio A. S. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Electrochimica Acta; v. 85, p. 560-565, DEC 15 2012.
• Citações Web of Science: 30

Resumo

In this study, a novel material for the electrochemical determination of bisphenol A using a nanocomposite based on multi-walled carbon nanotubes modified with antimony nanoparticles has been investigated. The morphology, structure, and electrochemical performance of the nanocomposite electrodes were characterised by field emission gun scanning electron microscopy, energy-dispersive X-ray spectroscopy, and cyclic voltammetry. A scan rate study and electrochemical impedance spectroscopy showed that the bisphenol A oxidation product is adsorbed on nanocomposite electrode surface. Differential pulse voltammetry in phosphate buffer solution at pH 6, allowed the development of a method to determine bisphenol A levels in the range of 0.5-5.0 mu mol L-1, with a detection limit of 5.24 nmol L-1 (1.19 mu g L-1). (C) 2012 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 10/11049-2 - Desenvolvimento e aplicação de sensores eletroquímicos baseados em nanotubos de carbono alinhados para a detecção de interferentes endócrinos em amostras ambientais
• Beneficiário: Fernando Cruz de Moraes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 10/11567-3 - Análise in situ dos subprodutos formados na degradação eletroquímica de hidrocarbonetos monoaromáticos
• Beneficiário: Ivana Cesarino
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado