文献类型：期刊文献

英文题名：Mechanism insights into the role of the support mineralization layer toward ultrathin polyamide nanofilms for ultrafast molecular separation

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

机构：[1]Kobe Univ, Res Ctr Membrane & Film Technol, Kobe, Hyogo 6578501, Japan;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[3]Diponegoro Univ, Fac Engn, Dept Environm Engn, JL Prof Soedarto Tembalang, Semarang 50275, Indonesia

年份：2021

卷号：9

期号：46

起止页码：26159

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20215011308991);WOS:【SCI-EXPANDED(收录号:WOS:000719381400001)】；

基金：We gratefully acknowledge the financial support through Grants-in-Aid from the Special Coordination Funds for Promoting Science and Technology, and the Creation of Innovation Centers for Advanced Interdisciplinary Research Areas Program (Innovative Bioproduction, Kobe) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan.

语种：英文

外文关键词：Desalination - Hydrophilicity - Membranes - Polymerization - Silica - Sodium sulfate - Chlorine compounds - Silicon

摘要：In this study, a highly perm-selective thin-film composite (TFC) nanofilm was successfully developed via silicification interlayer-mediated interfacial polymerization. The silicification interlayer, fabricated in situ, significantly improved the surface hydrophilicity of the polysulfone (PSf) substrate and facilitated the high-density uptake of amine monomers. The interlayer also served as a quasi-molecular-scale regulator that decelerated the diffusion of amine monomers 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 the membrane growth, which promoted the formation of ultrathin polyamide (PA) nanofilms (approx. 13 nm) with enhanced crosslinking properties. The best-performing PA_SiO2/PSf membrane exhibited a high water permeance of 14.5 L m(-2) h(-1) bar(-1), which was approximately three times the permeance of the pristine PA membrane (4.8 L m(-2) h(-1) bar(-1)). Furthermore, the membrane exhibited a high rejection capability toward divalent salts (98.7% against Na2SO4) and mono/divalent ion selectivity of 60.9. Hence, the newly developed PA_SiO2/PSf membrane exhibits competitive separation properties compared to the state-of-the-art desalination membranes. The technique is applicable to the majority of conventional interfacial polymerizations, which highlights its use in the development of high-performance membranes for water remediation.