Sensitive Voltammetric Determination of Bisphenol A Based on a Glassy Carbon Electrode Modified with Copper Oxide-Zinc Oxide Decorated on Graphene Oxide


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Karabiberoğlu Ş.

Electroanalysis, cilt.31, ss.91-102, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 31
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1002/elan.201800415
  • Dergi Adı: Electroanalysis
  • Sayfa Sayıları: ss.91-102

Özet

Abstract: A highly sensitive and selective chemical sensor
was prepared based on metallic copper-copper oxides and
zinc oxide decorated graphene oxide modified glassy
carbon electrode (CuZn/GO/GCE) through an easily
electrochemical method for the quantification of bisphe
nol A (BPA). The composite electrode was characterized
via scanning electron microscopy (SEM), X-Ray photo
electron spectroscopy (XPS) and electrochemical impe
dance spectroscopy (EIS). The electrochemical behavior
of BPA in Britton-Robinson (BR) buffer solution
(pH 7.1) was examined using cyclic voltammetry (CV).
Under optimized conditions, the square wave voltamme
try (SWV) response of CuZn/GO/GCE towards BPA
indicates two linear relationships within concentrations
(3.0 nmolL
10.1 mmolL1 and
0.35
mmolL120.0 mmolL) and has a low detection limit
(0.88 nmolL
1). The proposed electrochemical sensor
based on CuZn/GO/GCE is both time and cost effective,
has good reproducibility, high selectivity as well as
stability for BPA determination. The developed composite
electrode was used to detect BPA in various samples
including baby feeding bottle, pacifier, water bottle and
food storage container and satisfactory results were
obtained with high recoveries.
Keywords: graphene oxide · metallic copper · copper oxides · zinc oxide · Bisphenol A