A facile surface-grafting method was established via the reaction between the hydroxyl groups on the surfaces of MXene (Ti₃C₂T_x) nanosheets and the terminal of 1,3-dichloro-2-propanol (DPL) molecule, in order to modulate the hydrophobicity of Ti₃C₂T_x as well as the interfacial affinity with the crosslinked polyetherimide substrate. The DPL-grafted cs-Ti₃C₂T_x can be appropriately incorporated with the amino-terminated polyetherimide substrate to manufacture nanofiltration membranes (cs-MX) through a filtration-assisted assembly method. Characterized by TEM, FTIR, XRD, XPS, etc., it is suggested that the cs-Ti₃C₂T_x exhibits slightly enlarged lattice distance and excellent dispersity and affinity on the polymeric substrate. The optimal cs-MX-2 nanofiltration membrane has the superior methanol and isopropanol permeance of 112.5 and 17.0 L m^-2 h^-1 MPa^-1, respectively, and excellent rejection for Erythrosin B dye (up to 93%). The simple DPL-grafting is a promising method to modulate the integral structure of MXene-incorporated organic solvent nanofiltration membranes so as to improve the separation performance.

_{通过MXene（Ti 3} C ₂ T _x ）纳米片表面的羟基与1,3-二氯-2-丙醇（DPL）分子末端的反应，建立了一种简便的表面接枝方法，以调节Ti ₃ C ₂ T _x的疏水性以及与交联聚醚酰亚胺基材的界面亲和力。 DPL接枝的cs-Ti ₃ C ₂ T _x可以与端氨基聚醚酰亚胺基材适当结合，通过过滤辅助组装方法制造纳滤膜（cs-MX）。通过TEM、FTIR、XRD、XPS等表征表明，cs-Ti ₃ C ₂ T _x在聚合物基质上表现出略微增大的晶格距离以及优异的分散性和亲和性。最佳的cs-MX-2纳滤膜对甲醇和异丙醇的渗透率分别为112.5和17.0 L m ^-2 h ^-1 MPa ^-1，并且对赤藓红B染料具有优异的截留率（高达93%）。简单的DPL接枝是一种有前途的方法来调节MXene掺入有机溶剂纳滤膜的整体结构，从而提高分离性能。