Structural effects in molybdenum disulfide-stabilized silver nanoparticles for effective SERS detection of per- and polyfluoroalkyl substances.

MoS2 NFs@Ag NPs with a three-dimensional flower-like architecture were designed as high-performance SERS substrates for ultrasensitive PFAS detection. Synergistic plasmonic coupling, dense hot spots, and interfacial charge transfer enabled sensitive, morphology-dependent detection of PFOA and PFOS, offering a robust platform for environmental trace monitoring.