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Abstract: In this work, a molecularly imprinted polymer-assisted photoelectrochemical (MIPs-PEC) sensing strategy for the determination of norfloxacin (NOR) with high sensitivity was proposed based on photoelectrochemical technology and molecular imprinting technology. Specifically, the 3D flower-shaped BiOI microspheres with large specific surface area were encapsulated in molecularly imprinted polymer through thermal polymerization, and the obtained material was prepared into a photoelectrode (MIPs@BiOI/ITO). Photocurrent response, UV-vis, M-S, EIS and CV demonstrated the optical and electrical properties of different photoactive electrodes. The structural characteristics and chemical composition of the prepared materials were also investigated by SEM, TEM, XRD, FTIR and XPS. Thanks to the optical of BiOI and the specificity of MIPs, the MIP@BiOI/ITO photoelectrode had a good linear relationship with the NOR concentration in the range of 0.1 to 1000 nmol L-1, and the detection limit was calculated as 0.04 nmol L-1 (S/N = 3). Moreover, the MIPs-PEC sensing platform has also been confirmed to have excellent selectivity, sensitivity and anti-interference
Template and target information: norfloxacin, NOR
Author keywords: norfloxacin, Photoelectrochemical, molecular imprinting, Flower-shaped BiOI