Abstract: In this work, a novel strategy for the imprinting of oxacillin molecule on the surface of multiwalled carbon nanotubes (MWNT) was proposed. In brief, MWNTs were firstly coated with a layer of vinyl group modified silica, followed by aprecipitation polymerization with oxacillin as the template, ethylene glycol dimethacrylate (EGDMA) as the crosslinker, ethyl alcohol as solvent and 2,2-azobisisobutyronitrile (AIBN) as the initiator, respectively. The performances of MWNTs@SiO2@MIPs were characterized by UV, FT-IR, TG and SEM. The properties involving adsorption dynamics and selective recognition capacity were demonstrated. As a result, MWNTs@SiO2@MIPs show a higher adsorption capacity than MIPs and MWNTs@SiO2@NIPs. The maximum adsorption amount is up to 92 μmol/g and the distribution coefficient is 20.36. Furthermore, MWNTs@SiO2@MIPs show a better recognition ability to oxacillin and a higher imprinting efficiency. The products with regeneration can be recycled in a short term.
Template and target information: oxacillin
Author keywords: oxacillin, Multiwalled carbon nanotubes, precipitation polymerization, imprinting efficiency, Regeneration