气体透过基于石墨炔的纳米多孔膜的渗透
介观与纳米尺度物理
2022-07-27 v1
摘要
基于二维材料的纳米多孔膜有望在极高渗透率的同时提供高选择性气体传输。本文研究由多层石墨炔制成的膜,这是一种具有更大晶胞的类石墨烯晶体。尽管膜厚近一百纳米,其仍允许氦和氢等轻气体以克努森型方式快速渗透,而氙等重惰性气体则呈现被强烈抑制的流。利用同位素和低温测量,这种看似矛盾的特性被解释为存在高密度直通孔(直接孔隙率约 0.1%),重原子吸附于孔壁,部分阻塞了克努森流。我们的工作为纳米尺度上起作用的复杂传输机制提供了重要见解。
引用
@article{arxiv.2207.00731,
title = {Gas permeation through graphdiyne-based nanoporous membranes},
author = {Zhihua Zhou and Yongtao Tan and Qian Yang and Achintya Bera and Zecheng Xiong and Mehmet Yagmurcukardes and Minsoo Kim and Yichao Zou and Guanghua Wang and Artem Mishchenko and Ivan Timokhin and Canbin Wang and Hao Wang and Chongyang Yang and Yizhen Lu and Radha Boya and Honggang Liao and Sarah Haigh and Huibiao Liu and Francois M. Peeters and Yuliang Li and Andre K. Geim and Sheng Hu},
journal= {arXiv preprint arXiv:2207.00731},
year = {2022}
}