壳聚糖包覆的 FeO@Cd-MOF 微球作为一种有效吸附剂，用于从水溶液中去除阿莫西林。
Chitosan coated FeO@Cd-MOF microspheres as an effective adsorbent for the removal of the amoxicillin from aqueous solution.
机构信息
Polymer Research Laboratory, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
Polymer Research Laboratory, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran; Research Center for Pharmaceutical Nanotechnology (RCPN), Tabriz University of Medical Science, Tabriz, Iran.
出版信息
Int J Biol Macromol. 2021 Nov 30;191:108-117. doi: 10.1016/j.ijbiomac.2021.09.071. Epub 2021 Sep 16.
In this work, for the first time, a new magnetic cadmium-based MOFs (FeO@Cd-MOF) was successfully synthesized in a green way and then modified with chitosan (CS) in the microsphere form (FeO@Cd-MOF@CS). The obtained materials were fully characterized by several techniques. In the following, the efficiency of FeO@Cd-MOF@CS was explored for the removal of amoxicillin (AMX). The outcome of the adsorption study showed that the removal efficiency is affected by CS and reaches its optimum at pH 8 and contact time of 240 min. Under optimized conditions, over 75% of AMX was removed. The kinetic and the isotherm of the adsorption were fit with the pseudo-second-order model and the Langmuir adsorption isotherm respectively. Eventually, the maximum adsorption capacity was obtained ~103.09 mg/g. Interestingly, these findings convince that the newly prepared FeO@Cd-MOF@CS could be proposed as a promising magnetically separable adsorbent for antibiotic contaminants removal from the aqueous solution.
在这项工作中，首次以绿色方式成功合成了一种新型磁性镉基 MOFs（FeO@Cd-MOF），然后以微球形式用壳聚糖（CS）进行修饰（FeO@Cd-MOF@CS）。通过多种技术对所得材料进行了充分的表征。接下来，研究了 FeO@Cd-MOF@CS 对阿莫西林（AMX）的去除效率。吸附研究的结果表明，去除效率受 CS 的影响，在 pH 8 和接触时间 240 min 时达到最佳。在优化条件下，超过 75%的 AMX 被去除。吸附的动力学和等温线分别符合准二级模型和 Langmuir 吸附等温线。最终，获得的最大吸附容量约为 103.09 mg/g。有趣的是，这些发现表明，新制备的 FeO@Cd-MOF@CS 可以作为一种有前途的可分离磁性吸附剂，用于从水溶液中去除抗生素污染物。
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