A novel palladium nanoparticles-polyproline-modified graphite electrode and its application for determination of curcumin


Arslan E., Cakir S.

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, cilt.18, sa.6, ss.1611-1620, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 18 Konu: 6
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1007/s10008-014-2382-6
  • Dergi Adı: JOURNAL OF SOLID STATE ELECTROCHEMISTRY
  • Sayfa Sayıları: ss.1611-1620

Özet

A novel-modified electrode has been developed, by electrodeposition of palladium nanoparticles (PdNps) on polypyroline film-coated (Poly(Pr)) graphite electrode. The modified electrode (PdNps/Poly(Pr)/GE) was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) techniques. SEM proved that the palladium nanoparticles were uniform distributed with an average particle diameter of 20-45 nm. A higher catalytic activity was obtained for curcumin oxidation using this new modified electrode (PdNps/Poly(Pr)/GE). The square wave voltammogram of curcumin in pH 2 phosphate buffer exhibited an anodic peak at 0.504 V. This oxidation peak current was found to be linearly related to curcumin concentrations in the ranges of 5.0 x 10(-9) to 1.0 x 10(-7) M with a detection limit of 1.2 x 10(-9) M. This novel-modified electrode showed excellent sensitivity, compared with the existing reports about determination of curcumin.