Hydrothermal Fabrication of Efficient Binary Pd/AgS Heterojunction Composites: Synthesis, Characterization, and Fluorometric Selective Sensing of Organophosphate Pesticides.

Although many plasmonic nanosensors have been established for the detection of analytes, few of them are feasible for analyzing natural samples with very complex matrices because of insufficient method selectivity. To address this challenge, we propose an epitaxial and lattice-mismatch approach to the synthesis of a unique Pd/AgS nanostructure, which consists of a Pd segment with excellent plasmonic characteristics, and a highly stable AgS portion with minimum solubility product (Ksp(AgS) = 6.3 × 10).