Dehydration behaviour and structural evolution of graphene oxide membranes on silicon substrate
Wang, R; Gao, H; Zhu, DM; Yang, TY; Zhang, XM; Li, L; Yin, GZ; Zhu, LN; Feng, ZJ; Li, XL
2017
发表期刊CARBON
ISSN0008-6223
卷号114页码:23-30
文章类型期刊论文
摘要The dehydration kinetics of graphene oxide (GO) were investigated by in-situ two-dimensional grazing incident X-ray diffraction. We found that the interlayer spacing of the GO membrane gradually decreased as the annealing temperature increased and as time elapsed. Surprisingly, we observed the formation of an intermediate "water-rich" GO layers at 25 degrees C with an interlayer spacing of approximately 15.2 angstrom, which was caused by the intercalation of two additional layers of water into the interlayers of the GO membrane. Moreover, three types of water trapped in GO were clearly distinguished upon isothermal annealing at various temperatures. Below 160 degrees C, the removal of "bulk water" and "confined water" resulted in a smaller interlayer spacing and the preservation of oxygen-containing functional groups. At 160 degrees C or higher, "bound water" was removed and oxygen-containing functional groups were lost, which contributed to the reduction of GO. The dehydration behaviour and structural evolution of GO investigated here is useful for understanding and controlling the properties of GO membranes for permeation, separation and electronic applications. (C) 2016 Elsevier Ltd. All rights reserved.
DOI10.1016/j.carbon.2016.11.077
收录类别SCI
语种英语
WOS记录号WOS:000393249600004
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/27290
专题中科院上海应用物理研究所2011-2018年
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Wang, R,Gao, H,Zhu, DM,et al. Dehydration behaviour and structural evolution of graphene oxide membranes on silicon substrate[J]. CARBON,2017,114:23-30.
APA Wang, R.,Gao, H.,Zhu, DM.,Yang, TY.,Zhang, XM.,...&Li, XL.(2017).Dehydration behaviour and structural evolution of graphene oxide membranes on silicon substrate.CARBON,114,23-30.
MLA Wang, R,et al."Dehydration behaviour and structural evolution of graphene oxide membranes on silicon substrate".CARBON 114(2017):23-30.
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