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, vol.45, no.13, pp.1821-1829, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 13
  • Publication Date: 2013
  • Doi Number: 10.1002/sia.5328
  • Journal Name: SURFACE AND INTERFACE ANALYSIS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1821-1829
  • Keywords: 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 University Affiliated: Yes

Abstract

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.