کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10610639 985995 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic separation of Fe catalyst from single-walled carbon nanotubes in an aqueous surfactant solution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Magnetic separation of Fe catalyst from single-walled carbon nanotubes in an aqueous surfactant solution
چکیده انگلیسی
We report an efficient technique to separate ferromagnetic catalyst particles from an aqueous surfactant solution of single-walled carbon nanotubes (SWNTs) by the use of a 1.3 T permanent magnet. High resolution transmission electron microscopy (HRTEM) demonstrates that SWNTs are coated with a surfactant layer that stabilises the aqueous dispersions of SWNTs. The residual quantities of Fe catalyst (∼3%) can be effectively removed from a colloid solution of SWNTs in a magnetic field while absorbance spectra of the initial and purified solutions show that the nanotube diameter distribution remains unchanged.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 43, Issue 6, May 2005, Pages 1151-1155
نویسندگان
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