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

Author(s)

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

Affiliation

^[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

• Document type: Journal article
• Source: SENSORS AND ACTUATORS B-CHEMICAL; v. 210, p. 453-459, APR 2015.
• Web of Science Citations: 20

Abstract

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)

• FAPESP's process: 12/18339-1 - Detection of endocrine disruptors testosterone and estradiol in environmental samples utilizing modified electrodes with graphene, the gold nanoparticles and quantum dots.
• Grantee: Fernando Henrique Cincotto
• Support Opportunities: Scholarships in Brazil - Doctorate