多壁碳纳米管氮掺杂的光谱研究

Spectroscopic study of nitrogen doping of multi-walled carbon nanotubes.

作者信息

Enouz S, Bantignies J L, Babaa M R, Alvarez L, Parent P, Le Normand F, Stéphan O, Poncharal P, Loiseau A, Doyle B P

机构信息

Laboratoire des Colloïdes Verres et Nanomatériaux, Université Montpellier II, cc026, Place Eugène Bataillon, 34095 Montpellier, France.

出版信息

J Nanosci Nanotechnol. 2007 Oct;7(10):3524-7. doi: 10.1166/jnn.2007.839.

DOI:10.1166/jnn.2007.839

PMID:18330168

Abstract

Combined spatially resolved electron-energy loss spectroscopy (EELS) and high resolution near-edge X-ray absorption fine structure (NEXAFS) spectroscopy have been used to investigate the nitrogen doping of multi-walled carbon nanotubes (N-MWNT). EELS indicates that most of the tubes are nitrogen-doped. NEXAFS spectroscopy reveals pyridine-like and nitrile N structures. High resolution NEXAFS experiments show that the main nitrogen concentration originates from a high amount of molecular N2 encapsulated into only a small quantity of tubes.

摘要

结合空间分辨电子能量损失谱（EELS）和高分辨率近边X射线吸收精细结构（NEXAFS）光谱，对多壁碳纳米管（N-MWNT）的氮掺杂进行了研究。EELS表明，大多数碳纳米管都进行了氮掺杂。NEXAFS光谱揭示了吡啶类和腈基氮结构。高分辨率NEXAFS实验表明，主要的氮浓度源自仅少量碳纳米管中封装的大量分子N₂。