Effects of ammonia in catalytic chemical vapor deposition in the synthesis of carbon nanotubes
Effects of ammonia in catalytic chemical vapor deposition in the synthesis of carbon nanotubes
复制标题
氨对催化化学气相沉积法合成碳纳米管的影响
DOI：
10.3365/met.mat.2008.04.269
复制
发表时间：
2008
影响因子：
3.5
通讯作者：
Y. Lim
中科院分区：
文献类型：
--
作者：
Hao Zhang;Yanfang Chen;Sung‐Soo Kim;Y. Lim
采用化学气相沉积法，以二甲苯为碳源，硝酸铁溶液为催化剂，氨气为还原气，研究了不同参数对碳纳米管的影响。不同浓度的氨气和不同的衬底会影响用氨气和石英石板制备的碳纳米管的形貌和性能。这种方法产生了大量具有典型竹状内层结构的垂直排列的碳纳米管。在这类碳纳米管的合成中，氨通过催化剂团聚作用蚀刻催化剂表面。
Chemical vapor deposition with xylene as the carbon resource, a nitrate iron solution as the catalyst, and ammonia gas as the reduction gas was used to investigate the different parameters that influence carbon nanotubes. Different concentrations of the ammonia gas and different substrates affect the morphology and properties of carbon nanotubes fabricated using the method involving ammonia gas and a quartz plate. This method yields a large quantity of vertically aligned carbon nanotubes with a typical bamboo-like inner layer structure. In the synthesis of this type of carbon nanotube, the ammonia etches the catalyst surface through the catalyst agglomeration.