In this article, ZIF-8 nanoparticles were synthesized in water and directly added to a polyethyleneglycol (PEG) aqueous solution (water-based mixing process) to prepare ZIF-8/PEG mixed matrix membranes (MMMs) for pervaporation desulfurization. The structure and properties of ZIF-8 particles were characterized by Fourier Transform-Infrared Spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and BET analysis. The surface composition and structural morphology of all ZIF-8/PEG MMMs were systematically investigated by FT-IR and SEM. The effect of ZIF-8 content on the pervaporation performance of ZIF-8/PEG membranes was investigated. Versus pure PEG membranes, both the total flux and the sulfur enrichment factor of the ZIF-8/PEG MMMs were remarkably increased. This phenomenon is attributed to the good compatibility between PEG and ZIF-8 particles and the high thiophene selective sorption of ZIF-8 particles (confirmed by molecular simulation). Optimal pervaporation performance was achieved at a 4 wt% loading of ZIF-8 particles with the flux of 1.96 kg/(m² h) and the sulfur enrichment factor of 8.93. These increased by 397.46% and 18.75% versus pristine PEG membrane, respectively. In addition, the effect of operation temperature and feed sulfur content on membrane performance were also systematically investigated.

在本文中，ZIF-8纳米粒子是在水中合成的，然后直接添加到聚乙二醇（PEG）水溶液中（水基混合过程）以制备用于全蒸发脱硫的ZIF-8 / PEG混合基质膜（MMM）。ZIF-8颗粒的结构和性质通过傅立叶变换红外光谱（FT-IR），扫描电子显微镜（SEM），X射线衍射（XRD）和BET分析进行了表征。通过FT-IR和SEM系统地研究了所有ZIF-8 / PEG MMM的表面组成和结构形态。研究了ZIF-8含量对ZIF-8 / PEG膜渗透蒸发性能的影响。与纯PEG膜相比，ZIF-8 / PEG MMM的总通量和硫富集因子均显着增加。这种现象归因于PEG与ZIF-8颗粒之间的良好相容性以及ZIF-8颗粒的高噻吩选择性吸附（通过分子模拟证实）。ZIF-8颗粒的负载量为4 wt％时通量为1.96 kg /（m），可获得最佳的全蒸发性能²  h）和硫富集系数为8.93。与原始PEG膜相比，它们分别增加了397.46％和18.75％。此外，还系统地研究了操作温度和进料硫含量对膜性能的影响。