Hydrogenation of single-walled carbon nanotubes
Hydrogenation of single-walled carbon nanotubes
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DOI：
10.1103/physrevlett.95.225507
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发表时间：
2005-11-25
影响因子：
8.6
通讯作者：
Nilsson, A
中科院分区：
文献类型：
--
作者：
Nikitin, A;Ogasawara, H;Nilsson, A
为了发展一种有用的储氢机制，我们利用芯能级光电子能谱和x射线吸收光谱研究了单壁碳纳米管与原子氢的氢化反应。我们发现，原子氢与纳米管壁中的碳原子形成C-H键，这种C-H键可以通过加热到600摄氏度而完全断裂。我们证明了单壁碳纳米管中碳原子的约65 +/-15at%氢化，这相当于5：1 +/-1：2wt%的氢容量。我们还表明，氢化是一个可逆的过程。
Towards the development of a useful mechanism for hydrogen storage, we have studied the hydrogenation of single-walled carbon nanotubes with atomic hydrogen using core-level photoelectron spectroscopy and x-ray absorption spectroscopy. We find that atomic hydrogen creates C-H bonds with the carbon atoms in the nanotube walls, and such C-H bonds can be completely broken by heating to 600 degrees C. We demonstrate approximately 65 +/- 15 at% hydrogenation of carbon atoms in the single-walled carbon nanotubes, which is equivalent to 5:1 +/- 1:2 wt% hydrogen capacity. We also show that the hydrogenation is a reversible process.