Precise Sub-Angstrom Ion Separation Using Conjugated Microporous Polymer Membranes

被引:58
作者
Zhou, Zongyao [1 ]
Guo, Dong [1 ]
Shinde, Digambar B. [1 ]
Cao, Li [1 ]
Li, Zhen [1 ]
Li, Xiang [1 ]
Lu, Dongwei [1 ]
Lai, Zhiping [1 ]
机构
[1] King Abdullah Univ Sci & Technol KAUST, Div Phys Sci & Engn, Thuwal 239556900, Saudi Arabia
关键词
conjugated microporous polymer; membrane; ion sieving; electropolymerization; precise separation; carbon nanotube film; GRAPHENE OXIDE MEMBRANES; ZEOLITE MEMBRANES; PERFORMANCE; ALGORITHMS; CARBAZOLE; TRANSPORT; ULTRATHIN; UNIFORM;
D O I
10.1021/acsnano.1c03194
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Polymer membranes typically possess a broad pore-size distribution that leads to much lower selectivity in ion separation when compared to membranes made of crystalline porous materials; however, they are highly desirable because of their easy processability and low cost. Herein, we demonstrate the fabrication of ion-sieving membranes based on a polycarbazole-type conjugated microporous polymer using an easy to scale-up electropolymerization strategy. The membranes exhibited high uniform sub-nanometer pores and a precisely tunable membrane thickness, yielding a high ion-sieving performance with a sub-1 A size precision. Both experimental results and molecular simulations suggested that the impressive ionsieving performance of the CMP membranes originates from their uniform and narrow pore-size distribution.
引用
收藏
页码:11970 / 11980
页数:11
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