文献类型：期刊文献

英文题名：The underlying mechanism insights into support polydopamine decoration toward ultrathin polyamide membranes for high-performance reverse osmosis

作者：Shen, Qin[1];Lin, Yuqing[2];Ueda, Takafumi[1];Zhang, Pengfei[1];Jia, Yuandong[1];Istirokhatun, Titik[1,3];Song, Qiangqiang[1];Guan, Kecheng[1];Yoshioka, Tomohisa[1];Matsuyama, Hideto[1]

机构：[1]Kobe Univ, Res Ctr Membrane & Film Technol, Dept Chem Sci & Engn, Kobe 6578501, Japan;[2]East China Univ Sci & Technol, Natl Engn Res Ctr Comprehens Utilizat Salt Lake R, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[3]Diponegoro Univ, Fac Engn, Dept Environm Engn, Semarang 50275, Indonesia

年份：2022

卷号：646

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20220311486081);WOS:【SCI-EXPANDED(收录号:WOS:000788678100002)】；

基金：Acknowledgments Qin Shen appreciates the financial support of the China Scholarship Council (CSC) of the Ministry of Education, CSC No. 201907040080.

语种：英文

外文关键词：Polydopamine modification; Diffusion-reaction process; Interfacial polymerization; Thin-film composite membrane; Reverse osmosis

摘要：The development of ultrathin polyamide (PA) nanofilms with desirable water permeance and high selectivity has been recognized as crucial for energy-efficient desalination of salty water and wastewater reclamation. In this study, an ultrathin PA reverse osmosis membrane (25 nm) was fabricated via polydopamine (PDA) interlayermediated interfacial polymerization onto a polyethersulfone (PES) substrate. The ultrathin PDA interlayer was soldered in situ onto PES substrates by precisely controlling the ammonia-initiated self-assembly process. Furthermore, the PDA interlayer conferred a high-density uptake toward aqueous amine monomers and served as a quasi-molecular-scale regulator that mediated their diffusion into the organic phase to polymerize with the acyl chloride of 1, 3, 5-benzenetricarbonyl trichloride (TMC). The synergistic effects triggered self-sealing and inhibited membrane growth, promoting the formation of an ultrathin and defect-free PA nanofilm with a hierarchical nanostripe surface. The newly developed membranes exhibited a desirable water permeance of up to 1.44 L m(-2) h(-1).bar(-1), almost triple that of the pristine PA membrane (0.44 L m(-2) h(-1).bar(-1)), and a simultaneously enhanced rejection ratio of 99.2% toward NaCl. This work sheds light on strategies to develop ultrathin PA-based membranes with high water permselectivity for environmental-and energy-relevant applications.