BOOK OF ABSTRACTS 231 IHSS&IWA26 / BRNO / CZECHIA / 23–28 August 2026 Hall A Poster Session / Environment, Agriculture, and Forestry P4.10 Molecularly Imprinted Polymer-Based Metal Catalysts Enable Selective Degradation of Fluorinated Pharmaceuticals and Resistance to Natural Organic Matter Fouling Jaehyeong Park1, Jong Kwon Choe1 1 Department of Civil, Urban and Environmental Engineering and Institute of Construction and Environmental Engineering, Seoul National University, 1 Gwanak-ro Gwanak-gu, Seoul 08826, Republic of Korea, jaehpk95@snu.ac.kr, jkchoe@snu.ac.kr Natural organic matter (NOM) is major impediment to catalytic treatment of micropollutants in water, as it competes for active metallic sites on the catalyst surface and consumes reactive radicals generated during the process. To overcome this inhibitory effect, catalyst must be designed with enhanced selectivity toward target compounds present at trace concentrations. Herein, we adopted molecularly imprinted polymer (MIP), synthesized using capecitabine as the template molecule, as supports for Rh and Pd catalysts to achieve selective catalytic reduction and oxidation in water, respectively. The MIP provides molecular recognition sites complementary to capecitabine, enabling preferential adsorption of the target compound. Non-imprinted polymer (NIP) were also synthesized in the absence of the template under otherwise identical conditions and served as controls to evaluate imprintingderived selectivity. The resulting Rh/MIP and Pd/MIP catalysts exhibited 3.1- to 4.0-fold higher degradation rates than the corresponding Rh/NIP and Pd/NIP at an initial capecitabine concentration of 27.8 μM, indicating that the templateimprinted binding sites favorably attract capecitabine in proximity to the catalytically active Rh and Pd sites where surface-bound reductive species (e.g., adsorbed hydrogen, Hads) and oxidative radicals (e.g., sulfate and hydroxyl radical) are generated. This selectivity was successfully maintained even in the presence NOM; the MIPsupported Rh and Pd catalysts retained higher reactivity relative to their NIP counterparts in both reductive and oxidative processes. A similar trend was also observed in water matrices containing NOM and co-existing inorganic anions. We believe that these results of MIP-supported catalysts may serve as a platform for achieving selective degradation of target contaminants in complex water matrices where NOM inhibition is a critical limitation. Acknowledgement This work was supported by the National Research Foundation of Korea (NRF-
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