GAMMA-RAY IRRADIATION-INDUCED IMPROVEMENT OF HYDROGEN ADSORPTION IN MULTI-WALLED CARBON NANOTUBES

被引：15
|
作者：
Qian, Wen [1 ]
Chen, Jiafu [1 ]
Wei, Lingzhi [1 ]
Wu, Liusuo [1 ]
Chen, Qianwang [1 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
来源：
NANO | 2009年 / 4卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Carbon nanotube; defect; hydrogen adsorption; irradiation effects; physisorption and chemisorption; STORAGE; PURIFICATION; GRAPHITE;
D O I：
10.1142/S1793292009001459
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An improved hydrogen adsorption capacity of 0.5-0.6 wt% was obtained at room temperature and 10.0 MPa pressure for commercial MWNT sample by gamma-ray irradiation, compared with 0.33 wt% of pristine MWNTs. The irradiation-induced defects in structure, which is favorable for hydrogen adsorption, were characterized by ESR spectrum, elemental analysis, and Raman spectrum. The results show that gamma-ray irradiation increased the hydrogen adsorption capacity due to the increasing number of defects created by gamma-photons, but would reach the maximum when defect concentration achieves saturation.
引用
收藏
页码：7 / 11
页数：5
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