In this work, the nanoparticles of zeolitic imidazolate framework-8 (ZIF-8) are incorporated into poly (lactic acid) (PLA) to prepare porous electrospun membranes. The morphology, mechanical property as well as the PM capture process and capacity of the membranes are studied using scanning electron microscopy (SEM), BET test, X-ray diffraction (XRD), tensile test, Fourier infrared spectra (FT-IR), UV–visible spectra, thermogravimetric analyses (TGA) and photoelectron spectroscope (XPS), systematically. The results demonstrate that the diameter and nanoscale porous structure of fibres can be successfully controlled by changing the content ZIF-8. The PLA/ZIF-8 membranes show better mechanical property compared with pure PLA membrane. The PM capture measurement demonstrates that the PLA/ZIF-8 porous membranes exhibit significantly enhanced PM2.5 removal efficiency compared to that of the pure PLA membrane. The prepared porous membranes also show low pressure drops and good recycling performance.

在这项工作中，将沸石咪唑盐骨架8（ZIF-8）的纳米颗粒掺入聚乳酸（PLA）中以制备多孔电纺膜。使用扫描电子显微镜（SEM），BET测试，X射线衍射（XRD），拉伸测试，傅立叶红外光谱（FT-IR），紫外可见光谱，热重分析（TGA）和光电子能谱仪（XPS）。结果表明，通过改变ZIF-8的含量可以成功地控制纤维的直径和纳米级多孔结构。与纯PLA膜相比，PLA / ZIF-8膜表现出更好的机械性能。PM捕获测量表明，PLA / ZIF-8多孔膜表现出显着增强的PM2。与纯PLA膜相比，去除效率为5。制备的多孔膜还显示出低压降和良好的再循环性能。