Bettinger Holger F, Peng Haiqing
Lehrstuhl für Organische Chemie II, Ruhr-Universität Bochum, 44780 Bochum, Germany.
J Phys Chem B. 2005 Dec 15;109(49):23218-24. doi: 10.1021/jp054370r.
The thermal decomposition of fluorinated single-walled carbon nanotubes (F-SWNTs), known to result in pristine SWNTs, has been investigated by freezing the gaseous products formed at temperatures between 50 and 500 degrees C under high vacuum in an argon matrix at 10-20 K and analyzing the trapped species by IR spectroscopy. The major products of F-SWNT decomposition are carbonyl fluoride (COF2) below 300 degrees C and CF4 above 300 degrees C. For comparison, graphite fluoride is stable thermally up to 300 degrees C under these conditions, and the major gas-phase species at temperatures below 500 degrees C are CF4 and the CF3 radical. F-SWNTs are thermally less stable than graphite fluoride, and etching of the nanotubes is observed at lower thermolysis temperatures.
已知氟化单壁碳纳米管（F-SWNTs）热分解会生成原始单壁碳纳米管，通过在10 - 20 K的氩气基质中高真空冷冻在50至500摄氏度之间形成的气态产物，并利用红外光谱分析捕获的物质，对其进行了研究。F-SWNT分解的主要产物在300摄氏度以下是羰基氟（COF2），在300摄氏度以上是CF4。作为对比，在这些条件下，氟化石墨在300摄氏度以下热稳定，在500摄氏度以下的主要气相物质是CF4和CF3自由基。F-SWNTs的热稳定性低于氟化石墨，并且在较低的热解温度下会观察到纳米管被蚀刻。
