Precisely Determined Water Permeabilities of Sub-100 nm Nanochannels

doi:10.1002/admi.202000307

	Precisely Determined Water Permeabilities of Sub-100 nm Nanochannels
	Xu, Fang-Fang 1,2; Liu, Zhi-Wei 1,2; Huang, Ran 1,2; Zhang, Jia-Ming 1,2; Liu, Jie 1,2; Hu, Zheng-Guo 1,2,3,4; Ma, Jie 1; Yao, Hui-Jun 1,2; Sun, You-Mei 1,2; Chen, Yong-Hui 1
刊名	ADVANCED MATERIALS INTERFACES
	2020-06-08
页码	7
关键词	membranes nanochannels permeability ultrafiltration water purification
ISSN号	2196-7350
DOI	10.1002/admi.202000307
通讯作者	Mo, Dan(modan@impcas.ac.cn) ; Duan, Jing-Lai(j.duan@impcas.ac.cn)
英文摘要	Membrane ultrafiltration is an extensively used technique for water purification and hence understanding the water flow confined in nanochannels is of vital importance. As a key parameter, water permeability has been the focus of fundamental researches and technical applications. However, water permeability in sub-100 nm regime is not yet well understood as evidenced by the previously published data which are divergent from theory. Here, the precise determination of water permeabilities of sub-100 nm nanochannels is reported. This is achieved by the proposed innovative pore diameter-calibration method with excellent accuracy through replicating the pore geometry, and using the nanoporous ion track-etched membrane as a model system which features well-defined, cylindrical, straight, and equally sized nanochannels. Thanks to this accurate calibration method, the measured permeabilities show a remarkably improved precision as compared to the previously reported data. In addition, the measured permeabilities of the ultrafiltration channels are lower than the theoretical predictions. The discrepancy is explained under the framework of the wettability effect. It is expected that the work will shed light on a controversy over a decrease or increase in water permeability of ultrafiltration membranes and also guide the design of ultrafiltration membranes for water purification and separation applications.
资助项目	Outstanding Young Scientist Project, Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH010] ; National Key Research and Development Program of China[2019YFC1711300] ; National Natural Science Foundation of China[11675233] ; National Natural Science Foundation of China[11975114] ; National Natural Science Foundation of China[11775279] ; National Natural Science Foundation of China[11705246]
WOS关键词	TRACK-ETCHED MEMBRANES ; SURFACE ; HYDROPHILICITY ; NANOPARTICLES ; WETTABILITY ; PERFORMANCE ; SEPARATION ; VISCOSITY
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000538608000001
资助机构	Outstanding Young Scientist Project, Key Research Program of Frontier Sciences, CAS ; National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/140785]
专题	中国科学院近代物理研究所
通讯作者	Mo, Dan; Duan, Jing-Lai
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 3.Adv Energy Sci & Technol Guangdong Lab, Huizhou 516000, Guangdong, Peoples R China 4.Huizhou Res Ctr Ion Sci, Huizhou 516000, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Xu, Fang-Fang,Liu, Zhi-Wei,Huang, Ran,et al. Precisely Determined Water Permeabilities of Sub-100 nm Nanochannels[J]. ADVANCED MATERIALS INTERFACES,2020:7.
APA	Xu, Fang-Fang.,Liu, Zhi-Wei.,Huang, Ran.,Zhang, Jia-Ming.,Liu, Jie.,...&Duan, Jing-Lai.(2020).Precisely Determined Water Permeabilities of Sub-100 nm Nanochannels.ADVANCED MATERIALS INTERFACES,7.
MLA	Xu, Fang-Fang,et al."Precisely Determined Water Permeabilities of Sub-100 nm Nanochannels".ADVANCED MATERIALS INTERFACES (2020):7.