膜
材料科学
选择性
化学工程
功率密度
纳米纤维
离子
纳米技术
化学
有机化学
功率(物理)
催化作用
生物化学
量子力学
物理
工程类
作者
Ruijing Duan,Jiale Zhou,Xiaoyan Ma,Junran Hao,Dayong Zhao,Chao Teng,Yahong Zhou,Lei Jiang
出处
期刊:Nano Letters
[American Chemical Society]
日期:2023-11-30
卷期号:23 (23): 11043-11050
标识
DOI:10.1021/acs.nanolett.3c03343
摘要
Layered MXene nanofluidic membranes still face the problems of low mechanical property, poor ion selectivity, and low output power density. In this work, we successfully constructed heterostructured membranes with the combination of the layered channels of the MXene layer on the top and the nanoscale poly(p-phenylene-benzodioxazole) nanofiber (PBONF) layer on the bottom through a stepwise filtration method. The as-prepared MXene/PBONF-50 heterogeneous membrane exhibits high mechanical properties (strength of 221.6 MPa, strain of 3.2%), high ion selectivity of 0.87, and an excellent output power density of 15.7 W/m2 at 50-fold concentration gradient. Excitingly, the heterogeneous membrane presents a high power density of 6.8 W/m2 at a larger testing area of 0.79 mm2 and long-term stability. This heterogeneous membrane construction provides a viable strategy for the enhancement of mechanical properties and osmotic energy conversion of 2D materials.
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