CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
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
Source PublicationCARBON
ISSN0008-6223
Volume105Issue:-Pages:291—296
Subtype期刊文献
AbstractGraphene 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.
KeywordMembranes Water Degradation Irradiation Permeation Radiation Phase
DOI10.1016/j.carbon.2016.04.050
Indexed BySCI
Language英语
WOS IDWOS:000376607200034
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25711
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorLi, JY (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, CAS Ctr Excellence TMSR Energy Syst, Jialuo Rd 2019, Shanghai 201800, Peoples R China.
Recommended Citation
GB/T 7714
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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