Ultrasensitive detection of carbendazim pesticide in tea leaves using a green Ag/CuO(Cu2O) nanocomposite-based SERS sensor: role of metal/semiconductor transition in sensing performance

O, CuO) transitions in overall sensing performance. These findings underscore the potential of Ag/CuO nanocomposites for ultrasensitive pesticide detection in real-world agricultural environments and highlight the importance of metal/semiconductor transitions in designing more efficient SERS substrates. This paves the way for the development of versatile, field-ready SERS platforms applicable to a wide range of analytical and environmental monitoring needs.