CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
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
Source PublicationCARBON
ISSN0008-6223
Volume114Pages:23-30
Subtype期刊论文
AbstractThe 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
Indexed BySCI
Language英语
WOS IDWOS:000393249600004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27290
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
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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