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Volume 45 All articles Published: 2 June 2022 Article ID 0099
Oxidation modification of fluorinated graphite and its reaction mechanism
HAO LI SONG BI XIAOJING YUAN ZHAOHUI LIU YONGZHI SONG JINJIN WANG GENLIANG HOU
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 KMnO$_4$ is that MnO$_3$ $^+$ as Lewis acid would catalyse the activation ofthe 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 isgradually catalysed to react according to its activity as the KMnO$_4$ dosage increases, while the unsaturated carbon bond is oxidized, leaving some isolated carbon-fluorine bonds with weak activity.
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Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
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