基于MXene的膜,作为一种改性膜,具有独特的结构,吸引水处理的注意力,但遭受低的水通量。为了解决这个问题,用UiO-66-NH2纳米颗粒操纵MXene以产生UiO-66-NH2@MXene2D-纳米复合材料用于PES膜的改性。在这里,我们合成了一种新型的基于MXene的改性PES膜。MXene,UiO-66-NH2和UiO-66-NH2@MXene使用傅里叶变换红外评估,X射线衍射图,X射线光电子能谱,和zeta电位分析。场发射扫描电子显微镜用于评估MXene基材料和制备的膜,并使用原子力显微镜研究了所制备膜的表面形貌。0.25wt%改性剂改性的膜不仅能够去除72%和81%的亚甲基蓝和结晶紫阳离子染料,但也记录了超过91%的甲基蓝拒绝率,甲基橙,酸融合,和刚果红阴离子染料。使用相同的膜,91%的盐排斥率,87%,79%,对于Na2SO4、MgSO4、MgCl2和NaCl,分别。在用0.25wt%的新型纳米复合材料改性剂改性的膜中,水通量也增加了4倍以上。与原始PES膜相比,0.5wt%的膜的水接触角从65º降低到38º。此外,在引入的UiO-66-NH2@MXene纳米复合改性剂改性的膜中,防污性能得到了显着改善。
MXene-based membranes, as a type of modified membrane, have unique structures that attract attention for water treatment but suffer from low water flux. To address this,
MXene was manipulated with UiO-66-NH2 nanoparticles to create UiO-66-NH2@
MXene 2D-nanocomposites for the modification of the PES membrane. Herein, we synthesized a novel modified
MXene-based PES membrane. The
MXene, UiO-66-NH2, and UiO-66-NH2@
MXene were assessed using the Fourier transform infrared, X-ray diffraction pattern, X-ray photoelectron spectroscopy, and zeta potential analysis. Field emission scanning electron microscopy was used to evaluate the
MXene-based materials and prepared membranes, and the surface topography of the fabricated membranes was studied using atomic force microscopy. The membrane modified by 0.25 wt% of modifier was able to not only remove 72% and 81% of methylene blue and crystal violet cationic dyes, but also recorded more than 91% rejections for methyl blue, methyl orange, acid fusion, and Congo red anionic dyes. Using the same membrane, salt rejections of 91%, 87%, 79%, and 62% were achieved for Na2SO4, MgSO4, MgCl2, and NaCl, respectively. Water flux was also increased by more than 4 times in the membrane modified with 0.25 wt% of the novel nanocomposite modifier, and the water contact angle of the membrane with 0.5 wt% decreased from 65˚ to 38˚ compared to the pristine PES membrane. Besides, the anti-fouling properties were exceptionally improved in the membranes modified by the introduced UiO-66-NH2@MXene nanocomposite modifier.