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题名:
Graphene Oxide Restricts Growth and Recrystallization of Ice Crystals
作者: Geng, HY; Liu, X; Shi, GS; Bai, GY; Ma, J; Chen, JB; Wu, ZY; Song, YL; Fang, HP; Wang, JJ
刊名: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
出版日期: 2017
卷号: 56, 期号:4, 页码:997-1001
关键词: cryopreservation ; Gibbs-Thompson effect ; graphene oxide ; hydrogen bonds ; ice formation
DOI: 10.1002/anie.201609230
文章类型: 期刊论文
英文摘要: We show graphene oxide (GO) greatly suppresses the growth and recrystallization of ice crystals, and ice crystals display a hexagonal shape in the GO dispersion. Preferred adsorption of GO on the ice crystal surface in liquid water leads to curved ice crystal surface. Therefore, the growth of ice crystal is suppressed owing to the Gibbs-Thompson effect, that is, the curved surface lowers the freezing temperature. Molecular dynamics simulation analysis reveals that oxidized groups on the basal plane of GO form more hydrogen bonds with ice in comparison with liquid water because of the honeycomb hexagonal scaffold of graphene, giving a molecular-level mechanism for controlling ice formation. Application of GO for cryopreservation shows that addition of only 0.01 wt% of GO to a culture medium greatly increases the motility (from 24.3% to 71.3%) of horse sperms. This work reports the control of growth of ice with GO, and opens a new avenue for the application of 2D materials.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000394997200009
ISSN号: 1433-7851
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27337
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:
Geng, HY,Liu, X,Shi, GS,et al. Graphene Oxide Restricts Growth and Recrystallization of Ice Crystals[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2017-01-01,56(4):997-1001.
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文件名: Graphene Oxide Restricts Growth and Recrystallization of Ice Crystals.pdf
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