Qian Cheng, Qi Hang, Gao Bo, Cheng Yuan, Qiu Qi, Qin Lu-Chang, Zhou Otto, Liu Jie
Department of Chemistry, Duke University, Durham, NC 27708, USA.
J Nanosci Nanotechnol. 2006 May;6(5):1346-9. doi: 10.1166/jnn.2006.140.
A unique type of carbon nanotubes with 2 to 5 layers of sidewalls and diameters less than 10 nm was synthesized by the thermal chemical vapor deposition (CVD) method with MgO supported Fe/Mo catalyst. Unlike the typical CVD grown multi-walled carbon nanotubes, these few-walled carbon nanotubes (FWNTs) have a high degree of structural perfection. They have enhanced electron field emission characteristics compared to the current commercial nanotubes, with a low threshold field for emission and improved emission stability.
采用氧化镁负载的铁/钼催化剂，通过热化学气相沉积（CVD）法合成了一种独特的碳纳米管，其具有2至5层侧壁，直径小于10纳米。与典型的化学气相沉积生长的多壁碳纳米管不同，这些少壁碳纳米管（FWNTs）具有高度的结构完美性。与目前的商业纳米管相比，它们具有增强的电子场发射特性，发射阈值场低，发射稳定性好。
