Selective adsorption behavior of Pb(II) by mesoporous silica SBA-15-supported Pb(II)-imprinted polymer based on surface molecularly imprinting technique

▶ The novel surface ion-imprinted polymer based on SBA-15 possessed high ordered mesoporous structure and the graft occurred on the surface of the inner channel. ▶ Kinetics parameters indicated the second-order mechanism and pore diffusion were dominant. ▶ Thermodynamic parameters indicated the adsorption process was spontaneous, exothermic and good affinity nature. ▶ Fast kinetics, high selectivity and satisfied adsorption capacity were obtained.