Novel Sulfur-Containing Porous Organic Polymer as a Nanotrap for Rapid Removal of Mercury(II) from Environmental Waters

Abstract

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

Polymers from sugars and isothiocyanates: ring-opening copolymerization of ad-xylose anhydrosugar oxetane

“…It was hypothesised that the imidothiocarbonate linkage could act as a coordinating group. Indeed, previous studies have found S and N containing polymers to be effective at removal of Hg 2+ from aqueous solutions, with adsorption of Hg 2+ often attributed to simultaneous binding to S and N. 37–39 Similarly, polymeric Schiff bases have been found to form metal complexes, in particular with Cu 2+ . 40–46…”

“…to S and N. [37][38][39] Similarly, polymeric Schiff bases have been found to form metal complexes, in particular with Cu 2+ . [40][41][42][43][44][45][46] Two metal ions were considered, Cu 2+ and Co 3+ , which had been previously identified as toxic metals found in wastewater and which would allow colorimetric titration to monitor complexation.…”

Unusual 3,4-Oxidative Coupling Polymerization on 1,2,5-Trisubstituted Pyrroles for Novel Porous Organic Polymers

“…Porous organic polymers (POPs) have emerged as highly promising materials in the fields of energy and environment over the past decades. − Their exceptional performance on adsorption and separation, − catalysis, − energy storage, and conversion − has made them valuable for applications such as water treatment, − adsorption and conversion of greenhouse gases, − adsorption of metal ions, − and membrane separation. − These capabilities highlight the significant potential of POPs in addressing various challenges in the realms of energy and environmental sustainability. The characters and functions of POPs are tunable through the strategic design of functional monomers as well as polymerization techniques. − …”