LAUSR

HIGHLIGHTSHPDMIPs were firstly prepare for selective extraction of SA.Dummy template was used to synthesize MIPs for compound with strong intramolecular hydrogen bond.Ion liquid was selected as functional monomer to increase binding capacity.HPDMIPs had higher capacity for SA than any reported MIPs.HPDMIPs proved to be a highly effective enrichment material. ABSTRACT The existence of strong intramolecular hydrogen bond in salicylic acid (SA) weakens its intermolecular hydrogen bonding with functional monomer, then it is a challenge work to fabricate molecularly imprinted polymers (MIPs) for SA recognition with high capacity and good selectivity. Here, hollow porous dummy MIPs (HPDMIPs) were prepared using benzoic acid (BA) as dummy template, ionic liquid (i.e. 1‐vinyl‐3‐methylimidazolium chloride) as functional monomer, and MCM‐48 as sacrificial support. Factors that affected adsorption, such as type of template and porogen, mole ratio of template–functional monomer–cross‐linker and type of binding solvent, were optimized in detail. Multiple strong interactions between SA and ionic liquid in HPDMIPs deduced higher binding capacity (29.75 mg/g), imprinting factor (5.61) and selectivity than any previously reported MIPs by traditional or surface imprinting technology. The large surface area (543.9 m2/g) with hollow porous structure resulted in faster kinetic binding (25 min). The equilibrium data fitted well to Freundlich equation and the adsorption process could be described by pseudo‐second order model. Finally, HPDMIPs were successfully applied to selectively extract and enrich SA from Actinidia chinensis with a relatively high recovery (84.6–94.5%).