Colorimetric detection of picric acid using silver nanoparticles modified with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole

摘要: Abstract This article reports formulation of remarkably stable macromolecule capped silver nanoparticles for the instant naked eye assay extremely hazardous environmental pollutant, picric acid. We have established a simple and sensitive colorimetric technique acid using spherical FCC modified with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole (AHMT). In this context, highly AHMT (Ag@AHMT) are developed optimized via UV–vis, IR zeta potential. The designed Ag@AHMT 4–10 nm size range symmetrically distributed, regularly arranged utilized ultra-trace It is found that encourages aggregation Ag through charge transfer complex formation, leading to color varies from light yellow brownish yellow. variation can be visualized by eyes. Further it was examined UV–vis spectra limit detection obtained as 0.13 nM sensitivity 0.045 ng/mL. new approach lightens scope fabrication sensing devices pollutants.