An Ultrasensitive New Coccine Detection Sensor Based on Molecularly Imprinted Electrode Using Pod-Like Cerium Molybdate and Multi-Walled Carbon Nanotubes Hybrids

Metal alloy as a conductive material, has broad application prospects. The novel binary metal oxide cerium molybdate (Ce2Mo3O13) as a promising strategy can be combined with MWCNTs for development ultrasensitive sensors. Herein, a pod-like Ce2Mo3O13 was prepared, characterized and used to construct a molecularly imprinted sensor (MIPs) for detection of new coccine as low as to nanomolar concentration. The results demonstrate that the electrochemical response at the specific hybridized electrode of MIPs/Ce2Mo3O13-MWCNTs/GCE is stronger than non-molecularly imprinted ones (NIPs). It indicates a synergistic effect resulting from the hybridized Ce2Mo3O13-MWCNTs combination and modification to the electrode. Under optimal conditions, the calibration curve is in the range of 10 nmol L-1 to 1 μmol -1, with a limit of detection of 7 nmol L-1 for new coccine determination. The excellent sensitivity, reproducibility and selectivity of the new sensor provide an accurate and facile avenue for ultrasensitive new coccine detection in different samples.