Engineering nano-porous graphene oxide by hydroxyl radicals
Yu, CH; Zhang, BW; Yan, F; Zhao, JF; Li, JH; Li, LF; Li, JY; 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.
2016
发表期刊CARBON
ISSN0008-6223
卷号105期号:-页码:291—296
文章类型期刊文献
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.
关键词Membranes Water Degradation Irradiation Permeation Radiation Phase
DOI10.1016/j.carbon.2016.04.050
收录类别SCI
语种英语
WOS记录号WOS:000376607200034
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25711
专题中科院上海应用物理研究所2011-2018年
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.
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Yu, CH,Zhang, BW,Yan, F,et al. Engineering nano-porous graphene oxide by hydroxyl radicals[J]. CARBON,2016,105(-):291—296.
APA Yu, CH.,Zhang, BW.,Yan, F.,Zhao, JF.,Li, JH.,...&Li, JY .(2016).Engineering nano-porous graphene oxide by hydroxyl radicals.CARBON,105(-),291—296.
MLA Yu, CH,et al."Engineering nano-porous graphene oxide by hydroxyl radicals".CARBON 105.-(2016):291—296.
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