SERS of thiabendazole on silver-gold bimetallic nanoparticles: Adsorption mechanism

Au-Ag bimetallic nanoparticles (BNPs) with varying molar fractions as Au0.2Ag0.8 and Au0.3Ag0.7 are prepared on porous silicon. They were demonstrated as surface-enhanced Raman scattering (SERS) substrate for the detection of thiabendazole (TBZ) molecules. The concentration of TBZ investigated is 10-7 M. The effect of the Au content on SERS properties of the Au-Ag BNPs was studied. Furthermore, the composition dependent SERS spectra and adsorption mechanism of TBZ on Au-Ag BNPs surfaces were discussed.

Automated summary

Au-Ag bimetallic nanoparticles (BNPs) with varying molar fractions of Au0.2Ag0.8 and Au0.3Ag0.7 were prepared on porous silicon and used as surface-enhanced Raman scattering (SERS) substrates for detecting thiabendazole (TBZ) molecules at a concentration of 10-7 M. The effect of Au content on the SERS properties of the Au-Ag BNPs was investigated, and the composition-dependent SERS spectra and adsorption mechanism of TBZ on Au-Ag BNPs surfaces were discussed.