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题名:
Engineering nano-porous graphene oxide by hydroxyl radicals
作者: Yu, CH; Zhang, BW; Yan, F; Zhao, JF; Li, JH; Li, LF; Li, JY
刊名: CARBON
出版日期: 2016
卷号: 105, 期号:-, 页码:291—296
关键词: MEMBRANES ; WATER ; DEGRADATION ; IRRADIATION ; PERMEATION ; RADIATION ; PHASE
DOI: 10.1016/j.carbon.2016.04.050
通讯作者: Li, JY (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, CAS Ctr Excellence TMSR Energy Syst, Jialuo Rd 2019, Shanghai 201800, Peoples R China.
文章类型: 期刊文献
英文摘要: Graphene oxide (GO) has recently been identified as an excellent candidate for membrane science, but the relatively small number of channels for species to transport across the laminated GO membranes is one of the major limitations for the membrane permeability. Thus, engineering porous structures on GO sheets, such as pores and notched edges, is a promising solution to increase channels across the laminate when GO sheets are stacked into membranes. However, a controllable approach for constructing porous GO sheets requires further development. Here, we demonstrated that nano-porous GO sheets with well-controlled nano-pores and 'lacelike' edges were generated after 'etching' GO sheets by hydroxyl radicals (OH center dot), which were generated from water radiolysis by gamma-irradiation. Furthermore, the average diameter of nano-pores can be easily tuned from 3.7 to 13.6 nm by varying the 'etching' time. Carbon atoms in GO sheets where oxygen-containing groups were bonded to could be oxidized and removed by OH center dot radicals, leaving the defects in GO sheets. Then, the formation mechanism for the porous structures and the oxidation behavior of GO sheets are systematically investigated. These results should provide a new approach for engineering fluidic channels in GO membranes for future applications in nanofiltration and molecular separation. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000376607200034
ISSN号: 0008-6223
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25711
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Yu, CH,Zhang, BW,Yan, F,et al. Engineering nano-porous graphene oxide by hydroxyl radicals[J]. CARBON,2016-01-01,105(-):291—296.
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