A Two-Dimensional Lamellar Membrane: MXene Nanosheet Stacks

被引：1144

作者：

Ding, Li ^{[1
]}

Wei, Yanying ^{[1
]}

Wang, Yanjie ^{[1
]}

Chen, Hongbin ^{[1
]}

Caro, Juergen ^{[2
]}

Wang, Haihui ^{[1
]}

机构：

[1] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China

[2] Leibniz Univ Hannover, Inst Phys Chem & Electrochem, Callinstr 3A, D-30167 Hannover, Germany

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2017年 / 56卷 / 07期

关键词：

membranes; MXenes; separation; Ti3C2TX; two-dimensional nanosheets; GRAPHENE OXIDE MEMBRANES; CARBON-FIBER PAPER; ULTRAFILTRATION MEMBRANE; ELASTIC PROPERTIES; IN-SITU; SEPARATION; PERMEABILITY; PERFORMANCE; TRANSPORT; ULTRATHIN;

D O I：

10.1002/anie.201609306

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Two-dimensional (2D) materials are promising candidates for advanced water purification membranes. A new kind of lamellar membrane is based on a stack of 2D MXene nanosheets. Starting from compact Ti3AlC2, delaminated nanosheets of the composition Ti3C2Tx with the functional groups T (O, OH, and/or F) can be produced by etching and ultrasonication and stapled on a porous support by vacuum filtration. The MXene membrane supported on anodic aluminum oxide (AAO) substrate shows excellent water permeance (more than 1000Lm(-2)h(-1)bar(-1)) and favorable rejection rate (over 90%) for molecules with sizes larger than 2.5nm. The water permeance through the MXene membrane is much higher than that of the most membranes with similar rejections. Long-time operation also reveals the outstanding stability of the MXene membrane for water purification.

引用

页码：1825 / 1829

页数：5

共 47 条

[1]

[Anonymous], 2014, Angew. Chem.

[2]

[Anonymous], 2015, ANGEW CHEM

[3]

Development of a novel high-flux PVDF-based ultrafiltration membrane by embedding Mg-Al nanolayered double hydroxide [J].