In-situ observation of structural change in MWCNTs under high-pressure H2 gas atmosphere

被引：11

作者：

Nakayama, Atsuko ^{[1
]}

Numao, Shigenori ^{[1
]}

Nakano, Satoshi ^{[2
]}

Bandow, Shunji ^{[1
]}

Iijima, Sumio ^{[1
]}

机构：

[1] Meijo Univ, 21st Century COE Program Nanofactory, Tempaku Ku, Nagoya, Aichi 4688502, Japan

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan

来源：

关键词：

nanotubes; radiofrequency plasma vaporization; hydrogen storage; X-ray diffraction; high pressure;

D O I：

10.1016/j.diamond.2007.12.032

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multi-walled carbon nanotubes having a tube-opened framework (o-MWCNTs) have been pressurized in an atmosphere of hydrogen up to 2.5 GPa and at room temperature using a diamond-anvil cell (DAC). Compression up to 0.57 GPa was accompanied by expansion of the honeycom-lattice structure of graphene sheets in spite of decreasing interlayer distance. A deviation in the in-plane C-C distance was obtained to be 3.8 x 10(-4) nm at 0.57 GPa. The expansion in the honeycom-lattice structure suggests generation of charge-transfer interaction between graphite and hydrogen. This is one of the proofs that hydrogen is intercalated in the interlayer space of o-MWCNTs. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：548 / 551

页数：4

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