期刊
CHEMICAL PHYSICS LETTERS
卷 358, 期 3-4, 页码 213-218出版社
ELSEVIER
DOI: 10.1016/S0009-2614(02)00525-0
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Desorption of molecular hydrogen from single-walled carbon nanotube (SWNT) bundles and peapods (C-60 encapsulated SWNTs) have been observed at about 350 K by the temperature-programmed-desorption (TPD) method. A treatment with NaOH after purification is found to be crucial for obtaining clean SWTNs and for desorbing hydrogen at this moderate temperature. A clear difference observed in gas evolution from SWNTs and peapods shows that the storage site for the hydrogen molecule is an inter-tube space and that 'sub-nanometer' sized spaces are indispensable for storing hydrogen molecules in this system. (C) 2002 Elsevier Science B.V. All rights reserved.
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