MOF-808@PAN纳米纤维制备及其降解芥子气模拟剂性能

Preparation of MOF-808@PAN Nanofiber and Degradation Performance of Mustard Gas

摘要:

芥子气（HD）是难降解可致死的最广泛使用的化学战剂，锆基金属有机框架材料（Zr-MOFs）MOF-808对其有很好的降解效果。但现阶段研究MOF-808对HD的降解多以粉末态使用，易团聚难回收，为解决此问题，研究使用静电纺聚丙烯腈（PAN）来固定回收MOF-808，并验证了MOF-808@PAN对芥子气有优异的降解效果。以ZrOCl2、均苯三甲酸为原料，三氟乙酸为调节剂，基于水为溶剂无模板的合成了MOF-808@PAN纳米纤维材料。采用SEM、XRD、FTIR、TG及氮气吸脱附对催化剂结构进行了表征。实验结果表明，MOF-808@PAN纳米纤维具有441.5m2/g的比表面积。在5μL芥子气模拟剂（CEES）下暴露20个小时，CEES的降解效率可达83.7%。为芥子气的降解提供另一解决思路。

Abstract:

Mustard gas (HD) is the most widely used chemical warfare agent that is refractory and lethal. The new generation of MOFs material MOF-808 has been studied, which has a good degradation effect. However, the current research on the degradation of HD by MOF-808 is mostly used in powder form, which is easy to agglomerate and difficult to recycle. To solve this problem, this study uses electrospun polyacrylonitrile (PAN) to fix and recover MOF-808, and validates MOF- 808@PAN has excellent degradation effect on HD. The MOF-808@PAN nanofiber material was synthesized with ZrOCl2 and trimesic acid as raw materials, trifluoroacetic acid as a regulator, and template-free based on water as a solvent. The catalyst structure was characterized by SEM, XRD, FTIR, TG and nitrogen adsorption and desorption. The experimental results show that the MOF-808@PAN nanofiber has a specific surface area of 441.5m2/g. After 20 hours of exposure to 5μL of mustard gas simulant (CEES), 83.7% of CEES has been decomposed. Provide a new solution for HD degradation.