化工学报2015，Vol.66Issue(9)：3801-3807,7.DOI:10.11949/j.issn.0438-1157.20150780
火柴棒状纳米碳管的制备及其生长机理
Preparation of match-like carbon nanotube and its growth mechanism
摘要
Abstract
Tungsten trioxide nanorod was prepared by a hydrothermal method using sodium tungstate as tungsten source and sodium chloride as an inducer. The nanorod was coated with carbon by a hydrothermal reaction once again and using glucose as a carbon source. Match-like carbon nanotube was fabricated by reaction under a mixed gas of H2 and CH4 with a volume ratio of H2 to CH4 of 1:4. The crystal phase, morphology, microstructure and chemical elements of the samples were characterized and analyzed by X-ray diffraction, scanning electron microscope, transmission electron microscope and X-ray energy dispersion spectrum. The results showed that the sample was consisted of carbon nanotube and tungsten carbide (WC). The morphology of the carbon nanotube was of match-like with a length between 0.5 μm and 1.0 μm, and a diameter around 100 nm. WC particles laid in the inner space of the carbon nanotube and the inner diameter of the nanotube was depended on the diameter of WC particle. These implied that WC particle took a catalytic role during the growth of the carbon nanotube.关键词
火柴棒状/纳米碳管/碳化钨/催化/生长机理Key words
match-like/carbon nanotube/tungsten carbide/catalysis/growth mechanism分类
化学化工引用本文复制引用
李国华,孙海标,喻洋,谢伟淼..火柴棒状纳米碳管的制备及其生长机理[J].化工学报,2015,66(9):3801-3807,7.基金项目
国家自然科学基金项目(21173193,21301154) （21173193,21301154）
宁波市自然科学基金项目(2014A610116).supported by the National Natural Science Foundation of China (21173193, 21301154) and the Natural Science Foundation of Ningbo City (2014A610116). （2014A610116）
