文献类型：期刊文献

英文题名：Ultrathin Nonswelling NbTe2 Nanosheet Membranes for Fast and Tight Molecular Sieving

作者：Yi, Yuxuan[1];Wang, Chunli[2];Li, Guoqiang[2];Ma, Yuting[2];Xu, Zhenliang[1];Zhang, Liangzhu[2];Tang, Yongjian[1]

机构：[1]East China Univ Sci & Technol, Chem Engn Res Ctr, Sch Chem Engn,State Key Lab Chem Engn, Membrane Sci & Engn R&D Lab, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：37

期号：20

起止页码：8460

外文期刊名：CHEMISTRY OF MATERIALS

收录：;EI(收录号：20254419409745);WOS:【SCI-EXPANDED(收录号:WOS:001594323700001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grants 22579053, 22209176, 21808060), Shanghai Pujiang Talent plan project (23PJ1402000), Opening Project of State Key Laboratory of Functional Crystals and Devices (SKLFCD202504SIC) and Opening Project of Beijing National Laboratory for Condensed Matter Physics (2024BNLCMPKF017).

语种：英文

外文关键词：Boron compounds - Hydrophilicity - IV-VI semiconductors - Membrane technology - Microfiltration - Nafion membranes - Tellurium compounds - Titanium compounds

摘要：Two-dimensional (2D) membrane separation technology has attracted enormous attention to address freshwater scarcity due to tunable nanochannels for mass transport and high molecular sieving efficiency. However, many 2D lamellar membranes face challenges for long-term stability due to swelling in polar solvents. To overcome these limitations, we report niobium ditelluride (NbTe2) as a transition metal telluride (TMT) membrane material for efficient molecular separation. The NbTe2 nanosheet colloid solution was prepared through solid lithiation and exfoliation, and then fabricated into NbTe2 membranes via vacuum filtration. The NbTe2 membrane stands out for its low functional group density, which imparts excellent antiswelling properties in various solvent environments, thus ensuring membrane stability without extensive modifications. The NbTe2 membrane demonstrate 99% dye retention for methyl blue (MB), Coomassie brilliant blue (CBB), Congo red (CR), and Eriochrome black-T (EB-T) dye with high water permeance (up to 180 Lm-2h-1bar-1) due to the subnanometer nanochannels and super hydrophilic surface of membrane. This study demonstrates the unique capabilities of NbTe2 membranes, suggesting their potential as a robust solution for molecular sieving applications and expanding the possibilities for 2D membrane development.