A synergistic combination of reduced graphene oxide and antimony nanoparticles for estriol hormone detection

Autor(es)

Cesarino, Ivana ^[1] ; Cincotto, Fernando H. ^[2] ; Machado, Sergio A. S. ^[2]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Coll Agr Sci, BR-18603970 Botucatu, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SENSORS AND ACTUATORS B-CHEMICAL; v. 210, p. 453-459, APR 2015.
• Citações Web of Science: 20

Resumo

In this study, the modification of reduced graphene oxide (rGO) with antimony nanoparticles (SbNPs) for determination of estriol in natural water is presented for the first time. The morphology and the electrochemical performance of the rGOSbNPs composite were characterised by scanning electron microscopy and cyclic voltammetry, respectively. The synergistic combination of rGO sheets and Sb nanoparticles yielded a limit of detection (LOD) of 0.5 nmol L-1 (0.14 mu g L-1) for estriol hormone, the lowest LOD for estriol reported in the literature to our knowledge. The proposed device was successfully applied in the determination of estriol in a natural water sample, and is a promising platform for a simple, rapid, direct and ultrasensitive analysis of estriol. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 12/18339-1 - Detecção dos interferentes endócrinos testosterona e estradiol em amostras ambientais empregando eletrodos modificados com grafeno, nanopartículas de ouro e quantum dots.
• Beneficiário: Fernando Henrique Cincotto
• Modalidade de apoio: Bolsas no Brasil - Doutorado