کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1665634 | 1518050 | 2014 | 5 صفحه PDF | دانلود رایگان |
• Fe nanoparticles (NPs) were mixed with arachidic acids.
• FeNPs and arachidic acids were deposited on substrates by Langmuir-Blodgett method.
• The vertically-aligned (VA) CNTs were synthesized from FeNPs by thermal CVD method.
• Thermal aggregation of FeNPs was prevented by mixing arachidic acids.
• We report a relationship between thermal aggregation of FeNPs and VA-CNT growth.
Vertically-aligned carbon nanotubes (VA-CNTs) have been attracting attention as the electrode material of polymer electrolyte fuel cell. Fe nanoparticles (FeNPs) were used as catalyst for VA-CNT growth. FeNP monolayer film was deposited on substrates by Langmuir-Blodgett (LB) technique. VA-CNTs were synthesized from FeNP LB films by thermal chemical vapor deposition (CVD) method. Number density of VA-CNTs was lowered because of thermal aggregation of FeNPs during thermal CVD. We mixed FeNPs with arachidic acids (C20) as filler molecules, and synthesized VA-CNTs from FeNPs-C20 LB films, therefore we could reduce thermal aggregation and control the number density of FeNPs.
Journal: Thin Solid Films - Volume 554, 3 March 2014, Pages 69–73