NU-1000-Based Surface Molecularly Imprinted Polymer Synthesized with Template Prebinding Deep Eutectic Solvent (DESMyr) for Selective Adsorption of Myricetin

In this study, a surface molecularly imprinted polymer (SMIP) based on a prebinding deep eutectic solvent (DES) system was synthesized via molecularly imprinted polymerization, using DESMyr as an integrated template-functional monomer source and NU-1000, a mesoporous material with excellent stability, as the carrier. The resulting material was applied to the separation and adsorption of myricetin (Myr) from complex plant samples. The adsorbent preparation conditions and adsorption parameters were optimized. Under optimal conditions, the as-prepared DESMyr-NMIP exhibited rapid adsorption equilibrium (60 min), an excellent adsorption capacity (79.12 mg·g–1), high selectivity, and good reusability over five cycles. The kinetic data were well described by the pseudo-second-order model (R2 = 0.9836), and the adsorption isotherm data fitted the Langmuir model well (R2 = 0.9769). When the SMIP was used as an adsorbent for the analysis of real samples (bayberry juice and grape juice), satisfactory recoveries were obtained.