Environmental-friendly one-step fabrication of tertiary amine-functionalized adsorption resins for removal of benzophenone-4 from water.

摘要: Abstract 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid with a trade name of benzophenone-4, typical anti-UV product, is increasingly detected in real aqueous environment. Few literature using cost-effective adsorption means enough high capacity for the removal benzophenone-4 available. In this work, series novel tertiary amine-functionalized crosslinking polymeric resins, synthesized different proportions raw materials including 2-dimethylamino ethyl methacrylate as monomer, divinylbenzene reagent and toluene pore-forming reagent, were employed benzophenone-4. During synthesis process, an environmental-friendly one-step fabrication method, following concept cleaner production, was established reduction unnecessary derivatization steps, extra pollution risk, costs time. Among these optimal one relatively larger pore diameter, specific surface area, fewer inner defects, exhibited highest 154 mg/g. Such value notably than several frequently reported commercial adsorbents, activated carbon, ion exchange resins macroporous resins. The performance resin not only owned strong resistance against influences coexisting natural organic matter inorganic ions, but also bore reuse without much loss after six adsorption-desorption cycles. Adsorption interfacial interactions studied, via both experimental analyses chemical calculations. Electrostatic attraction between amine SO3- played leading role during adsorption.