Efficient and tunable shape selective synthesis of Ag/CeO nanostructures modified highly stable SERS substrate for ultrasensitive detection of pesticides on the surface of an apple.

Detection of pesticide residues from fruits and vegetables is of significant importance to ensuring human health and environmental safety. An efficient and tunable shape-selective synthesis of Ag/CeO nanostructures as an active flexible SERS substrate for the detection of thiram on an apple surface a paste, peel off, and paste again process was performed. The well-controlled formation of silver assembled CeO microspheres constituting nanospheres and nanospindles with an average size of approximately 56 and 32 nm with anisotropic structures has been confirmed through morphological and crystallographic analysis.