Hydrophobic‐functionalized ZIF‐8 nanoparticles incorporated PDMS membranes for high‐selective separation of propane/nitrogen
Hydrophobic‐functionalized ZIF‐8 nanoparticles incorporated PDMS membranes for high‐selective separation of propane/nitrogen
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DOI：
10.1002/apj.2058
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发表时间：
2017
影响因子：
1.8
通讯作者：
Jianwei Yuan;Qianqian Li;Jie Shen;Kang Huang;Gongpin Liu;Jing Zhao;Jingui Duan;W. Jin
中科院分区：
文献类型：
--
作者：
Jianwei Yuan;Qianqian Li;Jie Shen;Kang Huang;Gongpin Liu;Jing Zhao;Jingui Duan;W. Jin
由于难以微调填料和有机相之间的相容性，制备高性能混合基质膜（MMM）仍然是一个巨大的挑战。在这项工作中，ZIF-8 纳米颗粒通过壳配体交换 (SLE) 反应被 5, 6-二甲基苯并咪唑 (DMBIM) 疏水功能化，并被纳入聚二甲基硅氧烷 (PDMS) 基质中，以制造无缺陷的 MMM。由于 DMBIM 提供了更丰富的有机配体，实现了有机-无机界面兼容性。系统研究了不同负载量对膜微观结构和气体分离性能的影响。 C3H8/N2 分离性能显着增强，C3H8 渗透性超过 2.10 × 104 Barrer（比纯 PDMS 膜高 91%），C3H8/N2 选择性高达 99.5（比纯 PDMS 膜高 116%）。此外，所制备的膜在长期运行过程中还表现出优异的稳定性。 © 2016 科廷科技大学和 John Wiley & Sons, Ltd.
It is still a great challenge to prepare high performance mixed matrix membranes (MMMs) because of the difficulty in finely tuning the compatibility between filler and organic phases. In this work, ZIF-8 nanoparticles hydrophobically functionalized by 5, 6-dimethylbenzimidazole (DMBIM) via shell ligand exchange (SLE) reaction were incorporated into polydimethylsiloxane (PDMS) matrix to fabricate defect-free MMMs. Organic-–inorganic interface compatibility was realized because of more abundant organic ligands from DMBIM. The effects of different loadings on membrane microstructure and gas separation performance were investigated systematically. A significantly enhanced C3H8/N2 separation performance with C3H8 permeability over 2.10 × 104 Barrer (91 % higher than that of pure PDMS membrane) and C3H8/N2 selectivity of 99.5 (116 % higher than that of pure PDMS membrane) were achieved. Additionally, the as-prepared membrane also exhibited excellent stability during long term operation. © 2016 Curtin University of Technology and John Wiley & Sons, Ltd.