Highly sensitive electrochemical assay for Bisphenol A detection based on poly (CTAB)/MWCNTs modified pencil graphite electrodes

By Bolat, Gulcin; Yaman, Yesim Tugce; Abaci, Serdar
Published in Sensors and Actuators B: Chemical 2018

Abstract

In this work, we offered a cheap, effective and a rapid electrochemical detection of Bisphenol A (BPA) in a simple methodology. Cetyltrimethylammonium bromide (CTAB) and multi- walled carbon nanotubes (MWCNTs) were combined through electropolymerization onto pencil graphite electrode (PGE) surface by cyclic voltammetry to produce poly (CTAB)-MWCNTs composite. Electrochemical signal of BPA at poly (CTAB)-MWCNTs modified PGE was significantly enhanced. Scanning electron microscopy (SEM) and electrochemical methods were utilized to clarify the surface characterization. The limit of detection was calculated as 134 pM with a good regression between the concentration and peak current of BPA (R2=0.993) by using square wave voltammetry within the range of 2

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