In this study, the electrospun polyacrylonitrile (ePAN) fiber mats were used as support layer and natural mineral-halloysite nanotubes (HNTs) was used to construct the interlayer. Polydopamine modification was utilized to enhance the hydrophilicity of ePAN substrates and dispersibility of HNTs. The mHNTs interlayer effectively minified the surface pore size of substrates providing a better interface for interfacial polymerization forming an integrated and thin PA selective layers. Compared to the unmodified membranes, the water flux of the optimized membrane with mHNTs interlayer about 61.60% and 79.70% higher and the reverse salt flux of which was 38.95% and 45.08% lower in AL-FS mode and AL-DS mode respectively. These results suggested that introducing halloysite nanotube interlayer is an effective, and low-cost way to fabricate high-performance FO membrane.

在这项研究中，电纺聚丙烯腈 (ePAN) 纤维垫用作支撑层，天然矿物-埃洛石纳米管 (HNT) 用于构建中间层。聚多巴胺改性用于增强 ePAN 基材的亲水性和 HNT 的分散性。mHNTs中间层有效地缩小了基材的表面孔径，为界面聚合提供了更好的界面，形成了集成的薄PA选择性层。与未改性的膜相比，mHNTs夹层优化后的膜在AL-FS模式和AL-DS模式下的水通量分别提高了约61.60%和79.70%，反盐通量分别降低了38.95%和45.08%。这些结果表明，引入埃洛石纳米管夹层是有效的，