Synthesis, Evaluation, and Electrochemical Detection Application of Magnetic Molecularly Imprinted Polymers for 4,4<math xmlns="http://www.w3.org/1998/Math/MathML" id="M1"> <mo>′</mo> </math>-Methylenedianiline from Food-Contact Materials

Magnetic molecularly imprinted polymers (MIPs) capable of selectively recognizing and absorbing 4,4 ′ -methylenedianiline (MDA) were successfully synthesized, using Fe3O4 coated with mesoporous silicon (Fe3O4@mSiO2) as the magnetic carrier, 4-vinyl pyridine (4-VP) functional monomer, ethylene glycol dimethacrylate (EGDMA) cross-linking agent, MDA template molecule. The morphology, structure, properties MIPs characterized, suggesting that had obvious core-shell structure strong responsiveness. results adsorption property tests showed could specifically recognize adsorb excellent selectivity reusability. kinetic process be described by pseudo-second-order model, isotherm fitted Langmuir a maximum capacity 59.5 μmol/g. Furthermore, have been applied to electrochemical detection from composite film sample, recoveries in range 87.8% 92.5% RSD values less than 4.4%. prepared potential for selective separation food-contact materials.