Effect of porogenic solvent in synthesis of mesoporous and microporous molecularly imprinted polymer based on magnetic halloysite nanotubes

چکیده مقاله

A novel water-compatible magnetic molecularly imprinted polymer (MMIP) was fabricated for sunset yellow dye removal by surface imprinting approach. The magnetic halloysite nanotubes were prepared by co-precipitation method and used as support for surface polymerization. The synthesis of Fe₃O₄ nanoparticles on the halloysite nanotubes were confirmed by X-Ray Diffraction (XRD) and energy dispersive spectroscopy (EDS). Water and ethanol were used as polymerization solvents and the effect of porogenic solvent was investigated on final adsorption behavior of the polymers. The Brunauer-Emmett-Taller (BET) and Barrett-Joyner-Halenda (BJH) techniques were employed for surface area and pore diameter assessments. The MMIP synthesized in water (W-MMIP) showed higher adsorption capacity (46.4 μmol/g) and selectivity (K_sel = 3.60) toward sunset yellow dye. The adsorption kinetic data were …