Publications [#232994] of Jie Liu

Journal Articles

1. 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 C, vol. 111 no. 1 (January, 2007), pp. 131-133, American Chemical Society (ACS), ISSN 1932-7447 [doi]
   (last updated on 2026/01/16)

   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.