气候变化领域集成服务门户(CCPortal): Enhanced water permeability and tunable ion selectivity in subnanometer carbon nanotube porins

CCPortal

DOI	10.1126/science.aan2438
	Enhanced water permeability and tunable ion selectivity in subnanometer carbon nanotube porins
	Tunuguntla R.H.; Henley R.Y.; Yao Y.-C.; Pham T.A.; Wanunu M.; Noy A.
发表日期	2017
ISSN	0036-8075
起始页码	792
结束页码	796
卷号	357 期号:6353
英文摘要	Fast water transport through carbon nanotube pores has raised the possibility to use them in the next generation of water treatment technologies. We report that water permeability in 0.8-nanometer-diameter carbon nanotube porins (CNTPs), which confine water down to a single-file chain, exceeds that of biological water transporters and of wider CNT pores by an order of magnitude. Intermolecular hydrogen-bond rearrangement, required for entry into the nanotube, dominates the energy barrier and can be manipulated to enhance water transport rates. CNTPs block anion transport, even at salinities that exceed seawater levels, and their ion selectivity can be tuned to configure them into switchable ionic diodes. These properties make CNTPs a promising material for developing membrane separation technologies.
英文关键词	carbon nanotube; ion; porin; sea water; carbon nanotube; porin; water; anion; carbon nanotube; chemical bonding; hydrogen; membrane; seawater; separation; water treatment; analytical equipment; anion transport; Article; bulk density; density functional theory; hydrogen bond; ion transport; ionic strength; lipid bilayer; molecular dynamics; osmotic pressure; priority journal; punishment; reversal potential; salinity; subnanometer; temperature; water management; water permeability; water transport; chemistry; permeability; water management; Hydrogen Bonding; Nanotubes, Carbon; Permeability; Porins; Water; Water Purification
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245789
作者单位	Biology and Biotechnology Division, Physical and Life Sciences, Lawrence Livermore National Laboratory, Livermore, CA 94550, United States; Physics Department, Northeastern University, Boston, MA 02115, United States; School of Natural Sciences, University of California Merced, Merced, CA 94343, United States; Materials Science Division, Physical and Life Sciences, Lawrence Livermore National Laboratory, Livermore, CA 94550, United States
推荐引用方式 GB/T 7714	Tunuguntla R.H.,Henley R.Y.,Yao Y.-C.,et al. Enhanced water permeability and tunable ion selectivity in subnanometer carbon nanotube porins[J],2017,357(6353).
APA	Tunuguntla R.H.,Henley R.Y.,Yao Y.-C.,Pham T.A.,Wanunu M.,&Noy A..(2017).Enhanced water permeability and tunable ion selectivity in subnanometer carbon nanotube porins.Science,357(6353).
MLA	Tunuguntla R.H.,et al."Enhanced water permeability and tunable ion selectivity in subnanometer carbon nanotube porins".Science 357.6353(2017).