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Oxidation modification of fluorinated graphite and its reaction mechanism

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Abstract

The Hummers method was employed in this study to oxidize fluorinated graphite. In addition, the pre- and post-chemical compositions and microstructure were characterized and analysed to explore the modification mechanism. Oxidized fluorinated graphite (OFG) with lamellar structure and variable oxygen content was obtained by oxidation method. Primarily, the oxidative modification under KMnO4 is that MnO3+ as Lewis acid would catalyse the activation of the carbon-fluorine bond, which then breaks to release a fluorine ion. Secondly, the unsaturated carbon bond would be oxidized, increasing carbon-oxygen bond content and producing some OFG nano fragments. The carbon-fluorine bond is gradually catalysed to react according to its activity as the KMnO4 dosage increases, while the unsaturated carbon bond is oxidized, leaving some isolated carbon-fluorine bonds with weak activity.

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Acknowledgement

This research was supported by the Natural Science Basic Research Program of Shaanxi (Program No.2020JQ-488).

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Authors and Affiliations

  1. Xi’an Research Institute of High-Tech, Xi’an, 710025, People’s Republic of China

    Hao Li, Song Bi, Xiaojing Yuan, Zhaohui Liu, Yongzhi Song, Jinjin Wang & Genliang Hou

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  1. Hao Li
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  2. Song Bi
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  3. Xiaojing Yuan
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  4. Zhaohui Liu
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  5. Yongzhi Song
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Correspondence to Hao Li.

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Li, H., Bi, S., Yuan, X. et al. Oxidation modification of fluorinated graphite and its reaction mechanism. Bull Mater Sci 45, 99 (2022). https://doi.org/10.1007/s12034-022-02675-8

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  • DOI: https://doi.org/10.1007/s12034-022-02675-8

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