Synthesis, characterization, and application of silver nanoparticle-thiophenol nanocomposite film on the glassy carbon surface

GÜZEL R., Eksi H., ÜSTÜNDAĞ Z., Solak A. O.

SURFACE AND INTERFACE ANALYSIS, cilt.45, sa.13, ss.1821-1829, 2013 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 45 Sayı: 13
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1002/sia.5328
  • Dergi Adı: SURFACE AND INTERFACE ANALYSIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1821-1829
  • Anahtar Kelimeler: thiophenol modification, glassy carbon, silver nanoparticles, diazonium salt, surface characterization, X-ray photoelectron spectroscopy, ellipsometry, uric acid, SELF-ASSEMBLED MONOLAYER, SERUM URIC-ACID, ASCORBIC-ACID, ELECTROCHEMICAL REDUCTION, GOLD ELECTRODE, ENHANCED RAMAN, VOLTAMMETRIC DETECTION, SELECTIVE DETECTION, IN-SITU, DOPAMINE
  • Ankara Üniversitesi Adresli: Evet

Özet

In this study, 4-thiophenol modified glassy carbon electrode was prepared by the reduction of 4-diazothiophenol tetrafluoroborate salt. Silver nanoparticles were attached to the thiophenol modified surface to prepare a thiophenol-silver nanoparticle composite film. 4-Aminothiopenol molecules were deposited by self-assembling technique to form multi-layered nanofilms of TP/SNP/PhNH2 on glassy carbon substrate. These surfaces were characterized by cyclic voltammetry, electrochemical impedance spectroscopy, X-ray photoelectron spectroscopy, reflectance-absorption infrared spectroscopy, and ellipsometry at each multilayer film growth process. Atomic force microscopic images of GC/TP/SNP/PhNH2 surfaces were also acquired. The characterization methods show that the amine group containing surface permits the subsequent modification by a variety of coupling reactions for the immobilization of more complex systems. An application of the electrode modification for the determination of uric acid with a significantly lower detection limit is described. Copyright (c) 2013 John Wiley & Sons, Ltd.