Synthesis of silver nanocubes as a SERS substrate for the determination of pesticide paraoxon and thiram

Spectrochim Acta A Mol Biomol Spectrosc. 2014:121:63-9. doi: 10.1016/j.saa.2013.10.013. Epub 2013 Oct 24.

Abstract

The silver cube-like nanostructure with uniform size and high yield have been synthesized through the rapid sulfide-mediated polyol method. The morphology, structure and optical properties of the as-prepared silver nanocubes were characterized by UV-Visible spectroscopy, field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). The Surface-Enhanced Raman Scattering (SERS) performance of the as-prepared Ag nanocubes was characterized by crystal violet (CV) as the probe molecules. Furthermore, the low levels of thiram and pesticide paraoxon can be detected by the SERS technique, which shows that the silver nanocubes as a SERS substrate have excellent sensitivity and reproducibility.

Keywords: Pesticide detection; Silver nanocubes; Surface-Enhanced Raman Scattering.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Colloids
  • Gentian Violet / chemistry
  • Metal Nanoparticles / chemistry*
  • Metal Nanoparticles / ultrastructure
  • Paraoxon / analysis*
  • Pesticides / analysis*
  • Silver / chemistry*
  • Solutions
  • Spectrophotometry, Ultraviolet
  • Spectrum Analysis, Raman*
  • Suspensions
  • Thiram / analysis*
  • X-Ray Diffraction

Substances

  • Colloids
  • Pesticides
  • Solutions
  • Suspensions
  • Thiram
  • Silver
  • Gentian Violet
  • Paraoxon