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کد مقاله 1088

عنوان حذف یون های فلزی با استفاده از جاذب های هیدروژل نانوکامپوزیتی پلی وینیل ایمیدازول/گرافن کوانتوم دات دوپه شده با نیتروژن

عنوان Adsorptive Removal of Metal Ions Using Poly (N-vinyl imidazole)/N-Doped Graphene Quantum Dot Nanocomposite Hydrogels

نویسندگان سولماز مسعودی - معصومه باقری - مریم حسینی

نویسندگان Solmaz Masoudi - Massoumeh Bagheri - Maryam Hosseini

چکیده Removing toxic and polluting metals from contaminated water has become an important and necessary task and essential for preserving the environment. Polymeric adsorbents have widely used as effective materials for pollutants removal from waters due to cost-effectiveness, high efficiency, regeneration ability, simple handling and mechanical strength. N-vinyl imidazole contain nitrogen atoms as adsorption sites may endow the hydrogels with the ability to the adsorb various transition metals due to the strong interaction with these pollutants. The present work studies the adsorptive removal of copper and cobalt ions from aqueous solution by using a highly efficient nanocomposite hydrogel. Therefore, two series of poly (N-vinyl imidazole)/nitrogen-doped graphene quantum dot nanocomposite hydrogels (PVI/NGQD) with different cross-linkers have been successfully synthesized via in-situ polymerization method in aqueous solution. FT-IR, DSC, XRD and SEM equipped with energy dispersive X-ray spectroscopy analysis were used to characterize the structure and analyse the surface morphology of the adsorbent before and after metal ions adsorption. The effects of pH, initial concentrations of ions and contact time on the adsorption capacity of hydrogels were studied. Removal efficiencies of Cu(II) and Co(II) ions were found to be 100% and 100% at pH=7.0, optimal ions concentration of 500 mg/L and in contact times of 30 min, respectively. The research results suggest that the hydrogel can effectively be used for the adsorption removal of metal ions

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ثمین همایش، سامانه مدیریت کنفرانس ها و جشنواره ها - نگارش 29.9.1