Structural evolution of fluorinated graphene upon molten-alkali treatment probed by X-ray absorption near-edge structure spectroscopy
Structural evolution of fluorinated graphene upon molten-alkali treatment probed by X-ray absorption near-edge structure spectroscopy
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X射线吸收近边结构光谱探测熔融碱处理氟化石墨烯的结构演化
DOI:
10.1016/j.apsusc.2017.01.190
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发表时间:
2017-05
影响因子:
6.7
通讯作者:
Jin Guo
中科院分区:
文献类型:
--
作者:
Xianqing Liang;Deyou Pan;Ming Lao;Shuiying Liang;Dan Huang;Wenzheng Zhou;Jin Guo
The structural evolution of fluorinated graphene (FG) nanosheets upon molten-alkali treatment has been systematically investigated utilizing X-ray absorption near-edge structure (XANES) spectroscopy. It is found that the hydroxyl groups can progressively displace fluorine atoms to form covalent bonds to the graphene sheets under designed molten-alkali condition. The XANES spectra also reveal the formation of epoxide groups through intramolecular dehydration of neighbouring hydroxyl groups after substitution reaction. At high alkali-FG weight ratio, the restoration of the π-conjugated structure in graphene sheets can be observed due to the gradual decomposition of epoxide groups. Our experimental results indicate that the surface chemistry and electronic structure of hydroxyl-functionalized FG (HFG) can be readily tuned by varying the ratio of reactants.
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影响因子:
15.1
作者:
Feng, Wei;Long, Peng;Feng, Yiyu;Li, Yu
通讯作者:
Li, Yu
DOI:
--
发表时间:
2010
期刊:
--
影响因子:
--
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影响因子:
5.7
作者:
Dubecky, Matus;Otyepkova, Eva;Otyepka, Michal
通讯作者:
Otyepka, Michal
影响因子:
29.4
作者:
J. Zhong;Hui Zhang;Xuhui Sun;Shui-Tong Lee
通讯作者:
J. Zhong;Hui Zhang;Xuhui Sun;Shui-Tong Lee
影响因子:
21.8
作者:
Hossain, Md. Zakir;Johns, James E.;Hersam, Mark C.
通讯作者:
Hersam, Mark C.