DOI: 10.1016/j.scib.2020.04.017
论文题名: Integrated ionic sieving channels from engineering ordered monolayer two-dimensional crystallite structures
作者: Guo W. ; Chi K. ; Yan J. ; Bao L. ; Wang S. ; Liu Y.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期: 16 起始页码: 1356
结束页码: 1362
语种: 英语
中文关键词: Anisotropic etching
; Ionic sieving
; Monolayer graphene
; Two-dimensional
英文关键词: Anisotropic etching
; Crystal structure
; Crystallites
; Energy conversion
; Graphene
; Monolayers
; Single crystals
; Water filtration
; Array structures
; Chemical vapor deposition methods
; Crystallite structures
; Molecular transport
; Proof of concept
; Selective transport
; Synthetic parameters
; Two-dimensional (2D) crystals
; Chemical vapor deposition
英文摘要: Atomically thin solid-state channels enabling selective molecular transport could potentially be used in a variety of separation and energy conversion applications. The density of channels, their height, distance and edge structure are the key factors that dramatically impact the selective transport performance. However, such channels with small constrictions and atomic precision have been limited to proof-of-concept demonstrations based on microscale two-dimensional (2D) crystal stripes. Here, we report the engineering of highly ordered, scalable monolayer graphene crystallite arrays by chemical vapor deposition (CVD) method with a modified anisotropic etching approach. The size, shape, distance and edge structure of the graphene crystallite arrays in a large area could be delicately controlled through tailoring the synthetic parameters. This array structure can act as pillars to prop up a smooth single-crystal graphene film, and the fabricated integrated angstrom-size (3.4 Å) channels allow water transport but exclude hydrated ions, demonstrating potential in selective ionic sieving and nanofiltration practice. © 2020 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169903
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; Department of Materials Science, Fudan University, Shanghai, 200433, China; Institute of Physics, Chinese Academy of Sciences, Beijing, 100010, China
Recommended Citation:
Guo W.,Chi K.,Yan J.,et al. Integrated ionic sieving channels from engineering ordered monolayer two-dimensional crystallite structures[J]. Science Bulletin,2020-01-01,65(16)