UiO-66-NH₂ is a well-known metal organic framework with high porosity and surface area, and there are modifiable reactive amino groups in its structure, it has been applied in membrane modifications. A novel composite membrane (U1gFx) is successfully prepared by depositing UiO-66-NH₂ onto polyvinylidene fluoride (PVDF) membrane, and subsequently grafting with perfluoroalkyl polyethoxy acetic acid (FPEOAA). The water contact angle of the modified membrane declines from 124.27° to 71.05°, and the under-water oil contact angle increases from 86.03° to 149.45°, indicating a good hydrophilic and oleophobic change. The modified membranes show enlarged porosity and water flux due to the introduction of UiO-66-NH₂. The optimum membrane (U1gF10) shows excellent separation performance for various oil/water emulsions, including n-hexadecane, petroleum ether, dichloromethane and soybean oil. > 95 % oil rejection and up to 8081.9 L·m⁻²·h⁻¹ of permeation flux are achieved under the vacuum filtration mode (0.085 MPa). While treating the n-hexadecane/water emulsion, all membranes show > 99 % oil rejection in six filtration cycles. Under a dead-end filtration mode, membrane U1gF10 gives a high relative flux recovery rate at 93 % under 0.1 MPa, its pure water flux still keeps as highly as 982.5 L·m⁻²·h⁻¹, even after three filtration cycles, indicating a good antifouling property and great engineering application potential.

UiO-66-NH ₂是一种众所周知的金属有机骨架，具有高孔隙率和高比表面积，其结构中含有可修饰的活性氨基，已应用于膜修饰。_{通过将UiO-66-NH 2}沉积在聚偏二氟乙烯（PVDF）膜上，然后接枝全氟烷基聚乙氧基乙酸（FPEOAA），成功制备了一种新型复合膜（ U1gFx）。改性膜的水接触角由124.27°下降至71.05°，水下油接触角由86.03°增大至149.45°，具有良好的亲水疏油变化。由于引入 UiO-66-NH _{2 ，改性膜的孔隙率和水通量增大}. 最佳膜 (U1gF10) 对各种油/水乳液（包括正十六烷、石油醚、二氯甲烷和大豆油）显示出优异的分离性能。在真空过滤模式 (0.085 MPa) 下可实现> 95 % 的排油率和高达 8081.9 L·m ^-2 ·h ^-1的渗透通量。在处理正十六烷/水乳液时，所有膜在六个过滤循环中均显示 > 99 % 的脱油率。在死端过滤模式下，U1gF10膜在0.1 MPa下具有93%的高相对通量回收率，其纯水通量仍保持在982.5 L·m ^-2 ·h ^-1，即使经过三个过滤循环，表明具有良好的防污性能和巨大的工程应用潜力。