Thin-Film Composite Membranes with a Hybrid Dimensional Titania Interlayer for Ultrapermeable Nanofiltration

• DOI: 10.1021/acs.nanolett.1c04000
• Publication Date: 2022-01-20T13:27:02Z
• Authors: Shuangmei Xue; Cheng-Wei Lin; Chenhao Ji; Yaoli Guo; Liping Liu; Zhe Yang; Shuzhen Zhao; Xingke Cai; Qingshan Jason Niu; Richard B. Kaner
• Keywords: Nanofiltration; Thin-film composite membrane; Nanomaterials; Interfacial polymerization

The interfacial properties within a composite structure of membranes play vital role in the separation and application performances. Building an interlayer can facilitate formation highly selective layer as well improve membrane. However, it is difficult for nanomaterial-based to increase flux retention nanofiltration simultaneously. Here, we report membrane with hybrid dimensional titania that exhibits excellent performance. interlayer, composed Fe-doped nanosheets nanoparticles, helps ultrathin (∼30 nm thick) defect-free polyamide ideal nanostructure. endows superior permeability alleviates decline. In addition, rigid framework on PVDF support drastically improves pressure resistance shows negligible loss up 1.5 MPa pressure.