کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1590918 1515466 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis-condition dependence of carbon nanotube growth by alcohol catalytic chemical vapor deposition method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis-condition dependence of carbon nanotube growth by alcohol catalytic chemical vapor deposition method
چکیده انگلیسی
We report the dependence of growth yield of single-walled carbon nanotubes (SWNTs) on heat-treatment time and catalyst film thickness by the alcohol catalytic chemical vapor deposition method. Three types of heat-treatment, synthesis of 30 min, synthesis of 30 min after annealing of 30 min, and synthesis of 60 min, were investigated. Thickness of Co catalyst film was varied from 1 to 10 nm. In the case of thinner Co film less than 3 nm, long synthesis time of 60 min is favorable for the effective SWNT growth, because of the small amount of Co catalyst. In the case of thicker Co film more than 3 nm, an amount of grown SWNTs by 30 min synthesis after 30 min annealing and by 60 min synthesis was much higher than that by 30 min synthesis without annealing, showing that total heat-treatment time of 60 min is important for the SWNT growth. Results suggest that the conversion from the thicker film of Co to nano-particle which acts as catalyst takes place during the first 30 min.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science and Technology of Advanced Materials - Volume 8, Issue 4, May 2007, Pages 292-295
نویسندگان
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