A novel porous organic polymer with thioetherfunctionalized succinimide (TS-POP) through radical copolymerization as a facile, metal-free, and cost-effective strategy for Hg 2+ removal from aqueous solution is presented. Fourier transform infrared (FT-IR) spectroscopy and powder X-ray diffraction (XRD) were used to confirm the structure, while morphology, porosity, and physicochemical properties were determined using scanning electron microscopy (SEM), N 2 adsorption/desorption isotherm, and thermogravimetric analysis. Due to the presence of thioether functional groups in the polymer backbone together with the hierarchical porosity, TS-POP adsorbed Hg 2+ ions with an excellent uptake capacity (833 mg g −1 ) and exhibited rapid adsorption kinetics. The adsorption process of Hg 2+ ions over TS-POP is better described with Langmuir and pseudo-second-order models. Also, TS-POP showed very good selectivity for Hg 2+ uptake among various examined metal ions
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