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Study of the interaction between graphene oxide and humic acid by synchrotron radiation circular dichroism spectroscopy
其他题名同步辐射圆二色谱研究氧化石墨烯与腐殖酸的相互作用
Zhou XY(周晓艳); Wang B(汪冰); Chen HQ(陈汉清); Wang HL(王海龙); Tao Y(陶冶); Ou YH(欧阳宏); Feng WY(丰伟悦); Zhou; Xiaoyan; Wang; Bing; Chen; Hanqing; Wang; Hailong; Tao; Ye; Ouyang; Hong; Feng; Weiyue.
2015
卷号38期号:3页码:1-6
通讯作者周晓艳
摘要Background: Graphene Oxide (GO) was a type of two-dimension carbon nanomaterial with promising environmental application due to its good soly. in water, high absorbability and catalytic activity. Humic Acid (HA) was the main component of Natural Org. Matter (NOM) in water, which could be adsorbed on the surface of GO nanosheets via 蟺-蟺 interaction and then affect the physicochem. properties of GO in aq. system. Purpose: Investigating the interaction between GO and HA would provide some insights for environmental application of GO. Methods: We employed Synchrotron Radiation CD spectroscopy (SRCD), UV-Visible spectroscopy (UV-Vis) and Fourier Transform IR spectroscopy (FTIR) to explore the interaction between GO and HA under different mass ratio of HA to GO, environmental pH and temp. Results & Conclusion: UV-Vis spectroscopy of GO-HA showed that the intensity of the absorption peak at 228 nm gradually increased when the mass ratio of HA to GO increased to 4:1 from 1:4 and the FTIR C-O stretching vibration shifted and decreased, indicating the strong 蟺-蟺 interaction and hydrogen bonding between GO and HA. GO showed a broad peak at about 240 nm in SRCD spectra which origin from its surface O-contg. functional groups, folding or curl of the nanosheets. SRCD indicated the interaction between GO and HA could change the dispersion behavior of GO and then affect CD activity of GO-HA, depending on the mass ratio of HA to GO, environmental pH and temp. GO-HA showed higher CD activity with the increased pH and decreased temp. (4掳C) due to the increase of folding state. [on SciFinder(R)]
文章类型Article
DOI10.11889/j.0253-3219.2015.hjs.38.030101
收录类别CA
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228883
专题多学科研究中心
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GB/T 7714
Zhou XY,Wang B,Chen HQ,et al. Study of the interaction between graphene oxide and humic acid by synchrotron radiation circular dichroism spectroscopy[J],2015,38(3):1-6.
APA 周晓艳.,汪冰.,陈汉清.,王海龙.,陶冶.,...&Weiyue..(2015).Study of the interaction between graphene oxide and humic acid by synchrotron radiation circular dichroism spectroscopy.,38(3),1-6.
MLA 周晓艳,et al."Study of the interaction between graphene oxide and humic acid by synchrotron radiation circular dichroism spectroscopy".38.3(2015):1-6.
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