Synthesis of silver nanowires as a SERS substrate for the detection of pesticide thiram

• The silver nanomaterials with different structures were synthesized by a simple method.
• The pesticide residues of thiram are detected by SERS.
• The lower concentration of thiram was detected.

Silver nanowires with uniform diameters have been synthesized via the rapid sulfide mediated polyol method. The morphology, structure, and properties of as-prepared samples are characterized by UV–Visible spectroscopy, field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD), respectively. The mechanism of as-prepared Ag nanowires is provided and discussed. Moreover, as-prepared Ag nanowires are used as a Surface-Enhanced Raman Scattering (SERS) substrate to detect thiram pesticide. The results show that this substrate based on Ag nanowires exhibits high sensitivity and reproducibility for the thiram detection.

The single-crystal silver nanowires with good draw ratios and smooth surfaces have been synthesized by a simple sulfide-mediated polyol method and used as a SERS substrate for the detection of pesticide thiram. The values of RSD are lower than 20%. The result shows as-prepared Ag nanowires SERS substrate has high sensitivity and reproducibility for thiram (sulfur-containing pesticide).Figure optionsDownload as PowerPoint slide