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

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Bolat G., Yaman Y. T., Abacı S.

SENSORS AND ACTUATORS B-CHEMICAL, cilt.255, ss.140-148, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 255
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.snb.2017.08.001
  • Dergi Adı: SENSORS AND ACTUATORS B-CHEMICAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.140-148
  • Anahtar Kelimeler: Poly (CTAB), Bisphenol A, Electrochemical biosensor, Endocrine disruptor, Environmental monitoring, GLASSY-CARBON ELECTRODE, SCREEN-PRINTED ELECTRODE, SENSOR, NANOTUBE, NANOCOMPOSITE, NANOPARTICLES, SURFACTANT, BIOSENSOR, ELECTROPOLYMERIZATION, SPECTROSCOPY
  • Hacettepe Üniversitesi Adresli: Evet

Özet

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 (R-2 = 0.993) by using square wave voltammetry within the range of 2-808 nM. A teether, bottle water and a baby's bottle, which were purchased from local markets, were used as real matrixes and this method was used efficiently for the detection of BPA with a maximal recovery. Poly (CTAB)-MWCNTs based sensor demonstrated perfect electrochemical performance for the detection of BPA and this platform can be used for the determination of various analytes. (C) 2017 Elsevier B.V. All rights reserved.