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Catalyst effect on the preparation of single-walled carbon nanotubes by a modified arc discharge |
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| Authors: | Xin Zhao Xiarong Peng Jingtian Hu Wenbo Yang |
| Affiliation: | 1. Queen Mary University of London Engineering School, NPU, Northwestern Polytechnical University, Xi'an, China;2. State Key Laboratory of Solidification Processing, Shaanxi Engineering Laboratory of Graphene New Carbon Materials and Applications, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, China |
| Abstract: | Single-walled carbon nanotubes (SWCNTs) were prepared by a modified arc discharge furnace using 500?Torr helium as buffer gas at 600?°C. The effect of the catalyst type on the production of SWCNTs was studied by transmission electron microscopy, X-ray diffraction and Raman spectroscopy. The experimental results indicated that the catalyst composition plays an important role in the production rate and purity of the SWCNTs product. Fe-Ni-Mg and Co-Ni powder catalysts demonstrated excellent catalytic effect at a catalyst content of 3?wt%. The soot production rate was up to 15?g/hr and the mean diameter of SWCNTs was about 1.3?nm. |
| Keywords: | Single-walled carbon nanotubes Arc discharge Catalyst effect |