Publications [#232994] of Jie Liu
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- Qian, C; Qi, H; Liu, J, "Effect of tungsten on the purification of few-walled carbon nanotubes synthesized by thermal chemical vapor deposition methods", Journal of Physical Chemistry CJanuary,, 2007, 111(1), 131-133, American Chemical Society (ACS) [doi].
(last updated on 2024/03/28)Abstract:
Few-walled carbon nanotubes (FWNTs) were synthesized by the methane chemical vapor deposition (CVD) method using binary catalysts Co/Mo and Co/W supported on MgO. It was found that Mo was not only a promoter for FWNT growth but also active in the formation of multiwalled carbon nanotubes (MWNTs) in our CVD process. W was found to be a better promoter since it was much less active in producing MWNT impurities. As a result, the raw FWNT materials prepared from W-containing catalysts were much more easily purified than those from Mo-containing catalysts. Scanning electron microscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy, and transmission electron microscopy were used to characterize both raw materials and purified samples. © 2007 American Chemical Society.