Nafion-Graphene Composite Film Modified Glassy Carbon Electrode for Voltammetric Determination of p-Aminophenol


Filik H. , Cetintas G., Koc S. N. , Gulce H., Boz I.

RUSSIAN JOURNAL OF ELECTROCHEMISTRY, cilt.50, ss.243-252, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 50 Konu: 3
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1134/s1023193514030069
  • Dergi Adı: RUSSIAN JOURNAL OF ELECTROCHEMISTRY
  • Sayfa Sayısı: ss.243-252

Özet

A Nafion-graphene (Nafion-GR) nanocomposite film modified glassy carbon electrode was fabricated by a simple drop -casting method, and used in the electrochemical detection of p-aminophenol (4-AP). Owing to the large surface area, good conductivity of GR and good affinity of Nafion, the sensor exhibited excellent electrocatalytic activity for the oxidation of 4-AP. The electrochemical behaviors of 4-AP on Nafion/GR film modified glassy carbon electrodes were investigated by cyclic voltammetry and differential pulse voltammetry. A calibration curve is constructed in the same matrix, urine, as the unknown samples to be analyzed. The Nafion-GR film modified electrode was linearly dependent on the 4-AP concentration and the linear analytical curve was obtained in the ranges of 0.5-200-M with differential pulse voltammetry (DPV) and the detection limit was 0.051-M. The Nafion-graphene nanocomposite modified electrode exhibited good reusability than pure graphene modified GCE. This procedure can be used for the determi- nation of p-aminophenol in the presence of its degradation products and paracetamol. Finally, the proposed method was successfully used to determine p-aminophenol in local tap water samples in urine samples and pharmaceutical preparations.