A novel method for visual detection of Pb2 + based on SiO2@Au nanocomposites (NCs) is developed.
A sensitive method for the detection of aqueous Pb2 + ions using Au nanoparticles is developed.
Plasmonic detection of Pb2 + is based on aggregation of AuNPs or SiO2@Au NCs in analyte presence.
SiO2@Au NCs are ten times more sensitive as compared to AuNPs for the detection of Pb2 +.
SERS materials; ~ 20 nm AuNPs and ~ 360 nm SiO2@Au NCs used for the development of nanosensor for Pb2 +