Department of Chemistry, University of Ilorin, P.M.B.1515 Ilorin, Nigeria.
Department of Chemistry, University of Ilorin, P.M.B.1515 Ilorin, Nigeria.
J Environ Sci (China). 2018 Feb;64:264-275. doi: 10.1016/j.jes.2017.06.015. Epub 2017 Jun 27.
We herein report the removal of amodiaquine, an emerging drug contaminant from aqueous solution using [Zn(fum)(bpy)] and [ZnO(bdc)] (fum=fumaric acid; bpy=4,4-bipyridine; bdc=benzene-1,4-dicarboxylate) metal-organic frameworks (MOFs) as adsorbents. The adsorbents were characterized by elemental analysis, Fourier transform infrared (FT-IR) spectroscopy, and powder X-ray diffraction (PXRD). Adsorption process for both adsorbents were found to follow the pseudo-first-order kinetics, and the adsorption equilibrium data fitted best into the Freundlich isotherm with the R values of 0.973 and 0.993 obtained for [Zn(fum)(bpy)] and [ZnO(bdc)] respectively. The maximum adsorption capacities foramodiaquine in this study were found to be 0.478 and 47.62mg/g on the [Zn(fum)(bpy)] and [ZnO(bdc)] MOFs respectively, and were obtained at pH of 4.3 for both adsorbents. FT-IR spectroscopy analysis of the MOFs after the adsorption process showed the presence of the drug. The results of the study showed that the prepared MOFs could be used for the removal of amodiaquine from wastewater.
我们在此报告了使用 [Zn(fum)(bpy)] 和 [ZnO(bdc)]（fum=fumaric acid；bpy=4,4-bipyridine；bdc=benzene-1,4-dicarboxylate）金属有机框架（MOFs）作为吸附剂，从水溶液中去除新兴药物污染物阿莫地喹。通过元素分析、傅里叶变换红外（FT-IR）光谱和粉末 X 射线衍射（PXRD）对吸附剂进行了表征。发现两种吸附剂的吸附过程均遵循伪一级动力学，吸附平衡数据最好拟合 Freundlich 等温线，[Zn(fum)(bpy)] 和 [ZnO(bdc)] 的 R 值分别为 0.973 和 0.993。在这项研究中，[Zn(fum)(bpy)] 和 [ZnO(bdc)] MOFs 对阿莫地喹的最大吸附容量分别为 0.478 和 47.62mg/g，且在两种吸附剂的 pH 值为 4.3 时达到最大。吸附后 MOFs 的 FT-IR 光谱分析表明存在该药物。研究结果表明，所制备的 MOFs 可用于从废水中去除阿莫地喹。
