In this work, we reported the fabrication of novel loose nanofiltration (NF) hollow fiber membranes with dense-loose structure by one-step non-solvent induced phase separation (NIPS) method without post treatment. We selected air and graphene oxide (GO) as bore fluid and additive, respectively. The effects of air and GO on the properties of the prepared membranes were investigated based on field emission scanning electron microscope (SEM) image, pore size distribution, differential scanning calorimetry (DSC), Raman spectra, X-ray photoelectron spectrometer (XPS), water contact angle, zeta potential, mechanical strength, permeability, and rejection. The prepared membranes presented a long-term stability with a high dye rejection of 99.9% for treating the simulated textile wastewater. Meanwhile, the flux was much higher than those of the other reported membranes. Therefore, our prepared membranes showed a great potential for treating textile wastewater.

在这项工作中，我们报道了通过一步非溶剂诱导相分离（NIPS）方法而无需后处理的方法，制造了具有致密松散结构的新型松散纳米过滤（NF）中空纤维膜。我们分别选择空气和氧化石墨烯（GO）作为钻孔液和添加剂。基于场发射扫描电子显微镜（SEM）图像，孔径分布，差示扫描量热法（DSC），拉曼光谱，X射线光电子能谱仪（XPS），研究了空气和GO对制备的膜性能的影响，水接触角，ζ电势，机械强度，磁导率和截留率。所制备的膜具有长期稳定性，对模拟纺织品废水的处理具有高达99.9％的高染料截留率。同时，通量远高于其他报道的膜。因此，我们制备的膜在处理纺织废水方面显示出巨大的潜力。