کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8022162 1517281 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of high-quality double-walled carbon nanotubes using porous MgO nanowire supported iron oxide as catalyst
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Synthesis of high-quality double-walled carbon nanotubes using porous MgO nanowire supported iron oxide as catalyst
چکیده انگلیسی
Fe2O3/MgO catalyst was prepared by a simple conventional impregnation method, porous MgO nanowire as catalyst support. After calcination at 950 °C for 3 h, MgFe2O4/MgO solid solution was formed, which presents high efficiency for the synthesis of high-quality double-walled carbon nanotubes (DWCNTs) through the thermal chemical vapor deposition (CVD) of methane at 900 °C. The obtained DWCNTs were characterized by high-resolution transmission electron microscopy, thermal gravimetric analysis and Raman spectroscopy. The carbon yield was 29.2 wt%. The growth of the DWCNTs was attributed to the base-growth model. The formation of Fe3C during the CVD process plays key roles in the DWCNTs growth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 107, 15 September 2013, Pages 46-49
نویسندگان
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