نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشگاه تربیت مدرس، دانشکده علوم پایه، مرکز شیمی
2 دانشگاه جامع امام حسین (ع)، دانشکده علوم پایه، گروه شیمی
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this study, two zirconium-based metal-organic frameworks (MOF) named UiO-66 and UiO-66(NH2) were synthesized and characterized through Fourier transform infrared (FT-IR), powder X-ray diffraction (PXRD) and N2 sorption/desorption (BET) analysis. Beside these MOFs, dimethyl 4-nitrophenylphosphate (DMNP) as a nerve agent simulant was synthesized and characterized via ultraviolet-visible (UV-Vis) spectroscopy and nuclear magnetic resonance (NMR). Due to its properties and structure similarity to phosphorus nerve agents, DMNP was selected as a less toxic alternative model, to investigation the ability of prepared MOFs for nerve agent removal. UV-Vis spectroscopy was used to monitor the DMNP concentration during the removal process. The results showed that UiO-66 and UiO-66(NH2) display high ability in catalytically hydrolysis of DMNP in the aqueous solution and neutral buffer. The removal percentage (R%) of DMNP from the organic medium was also studied and the results showed that the removal R% of 50 mL of DMNP (50 ppm) were about 76.5 and 66.8% for UiO-66 and UiO-66(NH2), respectively. Examination of the stability of the adsorbents after the adsorption process by the PXRD technique also showed that the adsorbents are recyclable.
کلیدواژهها [English]