Electrochemical determination of estradiol using a thin film containing reduced graphene oxide and dihexadecylphosphate.

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ID: 76650
2014
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Ranked #52 of 133 articles by views in materials science & engineering c, materials for biological applications

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Abstract
Graphene is a material that has attracted attention with regard to sensing and biosensing applications in recent years. Here, we report a novel treatment (using ultrasonic bath and ultrasonic tip) to obtain graphene oxide (GO) and a new stable conducting film using reduced graphene oxide (RGO) and dihexadecylphosphate film (DHP). The GO was obtained by chemical exfoliation and it was reduced using NaBH4. Subsequently, RGO-DHP dispersion was prepared and it was dropped onto a glassy carbon electrode by casting technique. The electrode was characterized by cyclic voltammetry and electrochemical spectroscopy impedance. The voltammetric behavior of the RGO-DHP/GC electrode in the presence of estradiol was studied, and the results reported an irreversible oxidation peak current at 0.6V. Under the optimal experimental conditions, using linear sweep adsorptive stripping voltammetry, the detection limit obtained for this hormone was 7.7×10(-8)mol L(-1). The proposed electrode can be attractive for applications as electrochemical sensors and biosensors.
Reference Key
janegitz2014electrochemicalmaterials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Janegitz, Bruno C;dos Santos, Fabrício A;Faria, Ronaldo C;Zucolotto, Valtencir;
Journal materials science & engineering c, materials for biological applications
Year 2014
DOI
10.1016/j.msec.2013.12.026
URL
Keywords
reduced graphene oxide (rgo) dihexadecylphosphate film (dhp) electrochemical determination estradiol determination

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