Fabrication of Ag@AuNPs embedded h-BN Langmuir-Blodgett film as SERS active platform for trace detection of fungicide in solution and in grape skin

Abstract

The work explicitly focuses on fabrication of Langmuir-Blodgett (LB) films of hexagonal Boron Nitride (h-BN) with infused gold-core silver-shell nano particles (Ag@Au nano particles) as an efficient noble Surface enhanced Raman Scattering (SERS) active hetero-architecture. The “hot spots” generated over the h-BN network work as an effective contributor for localization of electromagnetic field shows high enhancement in Raman Signals. The LB film and the as prepared substrate were meticulously characterized in this current work. The efficacy and reproducibility of Ag@Au-hBN nano-plate substrate as a SERS detection sensor was investigated up to ultrasensitive concentrations using Raman probe molecules. The as prepared SERS substrate was also engaged for detection of fungicide Thiabendazole at trace concentrations. The tests to check on shelf life was also performed. In the contemporary study the as fabricated SERS sensing platform elicits its precision and effectiveness as a potent next generation one-click SERS sensing chip in detecting fungicide. Thus, in future this substrate can be a novel SERS scaffold for ultrasensitive detections of chemical and bio-chemical composites.