Supramolecular catalysts for the gas-phase synthesis of single-walled carbon nanotubes |
| |
Authors: | Saito Takeshi Xu Wei-Chun Ohshima Satoshi Ago Hiroki Yumura Motoo Iijima Sumio |
| |
Institution: | Research Center for Advanced Carbon Materials, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8565, Japan. takeshi-saito@aist.go.jp |
| |
Abstract: | Reversed micelles containing metallic ions have been used as precursors of novel catalysts for the gas-phase synthesis of single-walled carbon nanotubes (SWNTs). This technique possesses the following advantages: (i) excellent solubility in organic solvents, which are used as reactants and (ii) facile preparation of multicomponent catalysts enabling systematic screening of catalyst compositions for the synthesis of SWNTs. In this study, we report the results of the screening study on the catalytic behavior of Fe-Mo binary catalysts during the synthesis of SWNTs. The results suggested that the catalytic ability was closely related to the strain of the crystal structure of Fe-Mo catalysts formed in the reaction and/or the phase transition caused by dissolution of the Mo atoms. The addition of lithium to the Fe-Mo binary catalysts has revealed an increase in the yield of SWNTs. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|