کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1314158 | 975948 | 2011 | 7 صفحه PDF | دانلود رایگان |
Fluorination of single walled carbon nanotubes was carried out at low temperature in the −191/25 °C range under 1 atm pure fluorine gas. In such conditions, the resulting C–F bonding is significantly weaker than for samples fluorinated at 280 °C. If the fluorination is performed at low temperature, fluorine atoms can be then removed from the host structure by moderated heating until 300 °C or by vacuum without strong damage on the tubes. After thermal defluorination, the resulting sample can be refluorinated similarly than the pristine tubes.
When the fluorination of SWCNTs is carried out with 1 atm pure F2 gas at low temperature (−191/25 °C), the treatment is reversible.Figure optionsDownload as PowerPoint slideHighlights
• Fluorination of single walled carbon nanotubes was carried out at low temperature in the −191/25 °C range under 1 atm pure fluorine gas.
• In such operating conditions, fluorination–defluorination cycle results in weak damage in the nanotubes because of the unusually weak C–F bonding.
• Reversible fluorination occurs and is promising for fluorine storage.
Journal: Journal of Fluorine Chemistry - Volume 132, Issue 12, December 2011, Pages 1072–1078