Shape-dependent collective diffusion coefficient of multi-layers graphene nanopores

被引：8
作者：
Wen, Jia-le
Zheng, Dong-qin [1 ]
Zhong, Wei-rong
机构：
[1] Jinan Univ, Coll Sci & Engn, Dept Phys, Guangzhou 510632, Guangdong, Peoples R China
来源：
RSC ADVANCES | 2015年 / 5卷 / 120期
基金：
中国国家自然科学基金;
关键词：
POROUS GRAPHENE; GAS-TRANSPORT; CARBON; MEMBRANES; FLOW; RESISTANCES; DYNAMICS; NITROGEN;
D O I：
10.1039/c5ra21604d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Using non-equilibrium molecular dynamics, we study the particle transport in graphene membrane nanopores. The dependences of collective diffusion coefficient on the shape, the length, the cross sectional area of nanopore and the environmental temperature are discussed. Compared with carbon nanotubes, multi-layers graphene membrane has much lower collective diffusion coefficient. It is suggested that the interfacial and intracrystalline resistance can suppress particles transport in nanopores. Our research provides valuable advice for controlling the particle transport through nanoscale channels.
引用
收藏
页码：99573 / 99576
页数：4
相关论文
共 31 条
[1]   Surface resistance to permeation through the silicalite single crystal membrane: Variation with permeant [J].
Ahunbay, MG ;
Elliott, JR ;
Talu, O .
JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (23) :7801-7808
[2]  
[Anonymous], PHYS REV LETT
[3]   Transport diffusion of gases is rapid in flexible carbon nanotubes [J].
Chen, HB ;
Johnson, JK ;
Sholl, DS .
JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (05) :1971-1975
[4]   Rapid diffusion of CH4/H2 mixtures in single-walk carbon nanotubes [J].
Chen, HB ;
Sholl, DS .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (25) :7778-7779
[5]   Generalized efficiency and its application to microscopic engines [J].
Derényi, I ;
Bier, M ;
Astumian, RD .
PHYSICAL REVIEW LETTERS, 1999, 83 (05) :903-906
[6]   Electron beam nanosculpting of suspended graphene sheets [J].
Fischbein, Michael D. ;
Drndic, Marija .
APPLIED PHYSICS LETTERS, 2008, 93 (11)
[7]   Graphene as a subnanometre trans-electrode membrane [J].
Garaj, S. ;
Hubbard, W. ;
Reina, A. ;
Kong, J. ;
Branton, D. ;
Golovchenko, J. A. .
NATURE, 2010, 467 (7312) :190-U73
[8]   Ultrathin Graphene Nanofiltration Membrane for Water Purification [J].
Han, Yi ;
Xu, Zhen ;
Gao, Chao .
ADVANCED FUNCTIONAL MATERIALS, 2013, 23 (29) :3693-3700
[9]   Nanoporous Graphene Membranes for Efficient 3He/4He Separation [J].
Hauser, Andreas W. ;
Schwerdtfeger, Peter .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2012, 3 (02) :209-213
[10]   Fast mass transport through sub-2-nanometer carbon nanotubes [J].
Holt, JK ;
Park, HG ;
Wang, YM ;
Stadermann, M ;
Artyukhin, AB ;
Grigoropoulos, CP ;
Noy, A ;
Bakajin, O .
SCIENCE, 2006, 312 (5776) :1034-1037
1234