کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
228666 | 464846 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Selective synthesis of carbon nanotubes and nanocapsules using naphthalene pyrolysis assisted with ferrocene Selective synthesis of carbon nanotubes and nanocapsules using naphthalene pyrolysis assisted with ferrocene](/preview/png/228666.png)
Selective synthesis of well aligned multi-walled carbon nanotubes (MW-CNT) and multi-shelled carbon nanocapsule (MS-CNC) using pyrolysis of naphthalene with the presence of ferrocene was experimentally examined. With higher mole fraction of naphthalene to ferrocene, more MW-CNTs could be synthesized due to higher concentration of carbonaceous precursors emerging from the decomposed naphthalene. Based on kinetic analysis, at lower temperature, MW-CNTs could preferably be synthesized due to the controlled supply of carbonaceous clusters to get onto the surface of Fe clusters. On the other hand, at temperature higher than 900 °C the Fe clusters become more active to catalyze carbonaceous precursors to undergo self assembling process of MS-CNCs. With cheaper cost of naphthalene compared with other high-value hydrocarbons, usage of naphthalene would provide an advantage of reasonably economical synthesis of MW-CNT or MS-CNC.
Journal: Journal of Industrial and Engineering Chemistry - Volume 15, Issue 3, 25 May 2009, Pages 375–380