摘要
采用化学气相沉积法制备了N掺杂多壁纳米碳管,并运用透射电子显微镜、N2物理吸附、热重-差示扫描量热、程序升温氧化和X射线光电子能谱等手段对样品进行了表征.结果表明,纯化处理的纳米碳管表面N含量为4.2%,其中包括吡啶、己内酰胺、氧化吡啶、吡啶酮和吡咯等含氮官能团.研究了各种含氮官能团燃烧的动力学行为.N原子掺杂进入碳管的石墨结构中,提高了表面碱性,有可能用于催化与能源转化领域.另外,本文提供了一种可用于场发射器件的杯状闭合结构纳米碳合成方法.
Nitrogen-doped multiwalled carbon nanotubes （MWCNTs） were produced by catalytic chemical vapor deposition.The surface and structural properties were investigated by transmission electron microscopy,nitrogen physisorption,thermogravimetry-differential scanning calorimetry,temperature-programmed oxidation （TPO） and X-ray photoelectron spectroscopy.The surface of the purified sample contained 4.2% nitrogen atoms and comprised pyridine,lactam,pyridine oxide,pyridone and pyrrol functional components.TPO results reveal the combustion kinetics of each nitrogen-containing functional group.The nitrogen atoms are incorporated within the graphitic structure to give a basic surface,which will play an important role in the investigation of catalysis and energy conversion.A convenient route to a closed cup-like carbon nanostructure applicable to field emission devices is also reported.
出处
《催化学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第8期948-954,共7页
基金
国家自然科学基金创新群体项目(50921004)
中国科学院金属研究所引进优秀学者基金(O9NBA111A1)
关键词
官能团
氮掺杂
纳米碳管
X射线光电子能谱
程序升温氧化
functional group
nitrogen doping
carbon nanotube
X-ray photoelectron spectroscopy
temperature-programmed oxidation
作者简介
联系人：张建．Tel：（024）83970027；Fax：（024）83970019；E-mail：zhangj@imr．ac．cn联系人：苏党生．E—mail：dssu@imr．ac．cn联系人：彭峰．E—mail：cefpeng@SCut．edu.cn
