Low temperature electron spin resonance investigation on SWNTs after hydrogen treatment

被引：12
作者：
Musso, S.
Porro, S.
Rovere, M.
Tagliaferro, A.
Laurenti, E.
Mann, M.
Teo, K. B. K.
Milne, W. I.
机构：
[1] Politecn Torino, Dipartimento Fis, I-10129 Turin, Italy
[2] Politecn Torino, LAQ Intese, Turin, Italy
[3] Univ Turin, Dept Inorgan Phys & Mat Chem, Turin, Italy
[4] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England
来源：
DIAMOND AND RELATED MATERIALS | 2006年 / 15卷 / 4-8期
关键词：
carbon nanotubes; chemical vapor deposition; hydrogen storage; ESR;
D O I：
10.1016/j.diamond.2005.11.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report a study of hydrogen adsorption experiment on SWNT samples deposited by chemical vapor deposition (CVD) and investigated with Electron Spin Resonance spectroscopy (ESR) before and after hydrogen treatment. The ESR investigation was performed at room and low temperature (4-30 K). We found that ESR technique is very useful to investigate paramagnetic centers and their interaction with hydrogen. The morphology and structure of the samples were characterized by Micro-Raman spectroscopy. Subsequently the thermal stability was investigated by thermogravimetric analysis (TGA) testing. Brunauer Emmett Teller (BET) analysis was used to calculate the specific surface area and porosity of the as grown samples. All characterizations showed a small presence of residual Fe impurity (3.3 wt.%). (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：1085 / 1089
页数：5
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