气相纯化处理对碳纳米管修饰的XANES和XPS谱学研究  

XNAES and XPS studies on modification of SWCNTS upon gas-phase purification treatments

作　　者：梁先庆[1,2] 钟俊[2] 赵挺[2] 姚鹏[2] 奎热西.易卜拉欣 钱海杰[2] 吴自玉[1,2] 

机构地区：[1]中国科学技术大学,合肥230029 [2]中国科学院高能物理研究所,北京100049

出　　处：《核技术》2009年第12期894-896,共3页Nuclear Techniques

摘　　要：结合X射线近边吸收谱和光电子能谱对经过一系列纯化过程处理后的单壁碳纳米管进行系统的表征。这些纯化过程包括空气氧化、盐酸浸泡以及退火处理。从实验结果发现单壁碳纳米管的表面修饰程度在纯化过程中逐渐增强,经过Ar气保护下的高温退火后,这些表面修饰明显减少。同时还发现单壁碳纳米管能与氯原子成键,这种简单的修饰方法可能对单壁碳纳米管的应用具有重要意义。A systematic characterization of single-walled carbon nanotubes （SWCNTs） after successive purification steps, including air oxidation at 350℃, hydrochloric acid etching and 600℃ annealing in At, have been performed combining X-ray absorption near-edge structure （XANES） and X-ray photoelectron spectroscopy （XPS）. The results indicated that the modification degree of SWCNTs increased after the purification procedures, but decreased significantly by annealing in Ar. It also showed that the SWCNTs could bond with chlorine atoms during the hydrochloric acid etching and suggested this modification may be importance for the applications.

关 键 词：单壁碳纳米管 X射线吸收谱 光电子能谱 修饰 

分 类 号：O434[机械工程—光学工程] TB383[理学—光学]