Influence of the different carbon nanotubes on the development of electrochemical sensors for bisphenol A

Autor(es)

Goulart, Lorena Athie ^[1] ; de Moraes, Fernando Cruz ^[1] ; Mascaro, Lucia Helena ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Science & Engineering C-Materials for Biological Applications; v. 58, p. 768-773, JAN 1 2016.
• Citações Web of Science: 16

Resumo

Different methods of functionalisation and the influence of the multi-walled carbon nanotube sizes were investigated on the bisphenol A electrochemical determination. Samples with diameters of 20 to 170 nm were functionalised in HNO3 5.0 mol L-1 and a concentrated sulphonitric solution. The morphological characterisations before and after acid treatment were carried out by scanning electron microscopy and cyclic voltammetry. The size and acid treatment affected the oxidation of bisphenol A. The multi-walled carbon nanotubes with a 20-40 nm diameter improved the method sensitivity and achieved a detection limit for determination of bisphenol A at 84.0 nmol L-1. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 12/20926-2 - Desenvolvimento de eletrodos de nanotubos de carbono para degradação e detecção de bisfenol a e de seus derivados
• Beneficiário: Lorena Athie Goulart
• Modalidade de apoio: Bolsas no Brasil - Doutorado