Doped carbon nanotube array with a gradient of nitrogen concentration

作者:Xu Eryang; Wei Jinquan; Wang Kunlin*; Li Zhen; Gui Xuchun; Jia Yi; Zhu Hongwei; Wu Dehai
来源:Carbon, 2010, 48(11): 3097-3102.
DOI:10.1016/j.carbon.2010.04.046

摘要

Carbon nanotube (CNT) arrays doped with nitrogen were synthesized using chemical vapor deposition by pyrolysis of xylene/pyridine and ferrocene with a modified precursor feeding technique. The system produced a gradient of nitrogen concentration that modified the CNTs from a hollow cylinder to a bamboo-shaped structure which contains a series of compartments whose lengths are gradually reduced as the nitrogen concentration increases.