کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1677190 1518105 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermogravimetric analysis of cobalt-filled carbon nanotubes deposited by chemical vapour deposition
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Thermogravimetric analysis of cobalt-filled carbon nanotubes deposited by chemical vapour deposition
چکیده انگلیسی

In this paper, we report results from an investigation studying the purification of Co-filled carbon nanotubes (CNTs) using Thermogravimetric analysis (TGA). The as-grown CNTs were prepared using Microwave Plasma Chemical Vapour Deposition (MPCVD). Transmission electron microscopy (TEM), Fourier Transform Infrared (FTIR) and Raman spectroscopy were used to characterise the CNT samples. The CNTs produced by MPCVD were filled with cobalt and consisted of thick multi-walls. After TGA purification at 900 °C, 30 wt.% Co-filled CNTs remained in the TGA pan. However, while investigating the un-filled commercial CNTs (thin multiwalled), the sample completely burnt out at around 650 °C in the TGA furnace. The high thermal stability and the ability of thick-walled CNTs to act as an effective protective shield which prevents the oxidation of encapsulated cobalt have been demonstrated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 494, Issues 1–2, 3 January 2006, Pages 128–132
نویسندگان
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