Abstract：The template molecule of pnitrophenol (PNP) was complexed with ferric chloride hexahydrate to form complex. Using methacrylic acid (MAA) as functional monomer with ethylene glycol dimethacrylate (EGDMA) as crosslinking agent, the molecularly imprinted polymer (MIP) catalyst precursor was prepared by bulk polymerization. The template molecule was removed， and Fe3+ in the MIP catalyst precursor was reduced by boron sodium hydride solution to obtain nanoiron molecularly imprinted polymer (FeMIP) catalyst. FTIR, SEM, UVVIS, TEM and BET were used to characterize the performance and structure of FeMIP catalyst. Nanoiron nonmolecularly imprinted catalyst (FeNIP) and nonmolecularly imprinted polymer(NIP) were used as comparison tests. In the mixture solution of H2O2 and PNP, the catalytic degradation efficiencies of PNP and the analogues by FeMIP, FeNIP and NIP were investigated. The results show that the prepared FeMIP catalyst has relatively obvious degradation effect for PNP with H2O2 concentration of 0.90 mmol·L-1 at pH value of 3, and the degradation efficiency of PNP at 150 min can reach 74.56%, which is much higher than those of FeNIP with 41.74% and NIP with 20.60%. Under the same reaction conditions with FeMIP catalyst, the catalytic degradation efficiencies of 2nitrophenol and 3nitrophenol are respective 40.12% and 25.90%, which are much lower than that of PNP. FeMIP catalyst has matching cavities with PNP molecule and can efficiently catalyze specific substrate molecules.
