Droplet-based microfluidic synthesis of (Au nanorod@Ag)–polyaniline Janus nanoparticles and their application as a surface-enhanced Raman scattering nanosensor for mercury detection

Monodisperse anisotropic (AuNR@Ag)–PANI JNPs were synthesized by using a droplet-based microfluidic platform, and show a fairly good response to Hg²⁺ions and have been successfully applied for quantitative analysis of Hg²⁺ions in real water samples.