Abstract A novel photocatalytic membrane was prepared by using graphene oxide (GO), UiO-66-NH2 and Ag2CO3 as basic materials on the surface of PVDF membrane by vacuum filtration self-assembly. The prepared Ag2CO3@UiO-66-NH2/GO (AgCO@UiO/GO) membrane was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The AgCO@UiO/GO membrane possessed the photocatalytic effects, which significantly enhanced the separation effect of dyes and Cr(VI) wastewater. In particular, the AgCO@UiO/GO membrane can achieve complete removal of MB, RB,MR and Cr(VI) under light conditions maintaining the fluxes during filtration process reach about 50 L · m−2 · h−1. In addition, after long-time experiments, the AgCO@UiO/GO membrane retained a higher removal rate and maintained a high flux under light conditions than without light for all dyes and Cr(VI). The unique structure of AgCO@UiO/GO membrane with a large number of screening structures and photocatalytic activity resulting a better removal rate for pollutants and reducing membrane fouling. Furthermore, the AgCO@UiO/GO membrane shows a great potential in improving membrane removal performance and a solution to balance trade-off effect.

中文翻译：

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Ag2CO3@UiO-66-NH2嵌入氧化石墨烯片光催化膜提高基于过滤的Cr(VI)和染料去除性能

摘要 以氧化石墨烯（GO）、UiO-66-NH2和Ag2CO3为基础材料，通过真空过滤自组装在PVDF膜表面制备了一种新型光催化膜。制备的 Ag2CO3@UiO-66-NH2/GO (AgCO@UiO/GO) 膜通过 X 射线衍射 (XRD)、傅里叶变换红外光谱 (FTIR)、X 射线光电子能谱 (XPS)、扫描电子显微镜进行表征(SEM) 和原子力显微镜 (AFM)。AgCO@UiO/GO膜具有光催化作用，显着增强了染料和Cr(VI)废水的分离效果。特别是，AgCO@UiO/GO 膜可以在光照条件下完全去除 MB、RB、MR 和 Cr(VI)，并保持过滤过程中的通量达到约 50 L·m-2·h-1。此外，经过长时间的实验，对于所有染料和 Cr(VI)，AgCO@UiO/GO 膜在光照条件下比没有光照条件下保持更高的去除率并保持高通量。AgCO@UiO/GO 膜的独特结构具有大量的筛选结构和光催化活性，从而对污染物具有更好的去除率并减少膜污染。此外，AgCO@UiO/GO 膜在提高膜去除性能和平衡权衡效应的解决方案方面显示出巨大的潜力。