کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1618469 1005706 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multiwall carbon nanotubes purification and oxidation by nitric acid studied by the FTIR and electron spectroscopy methods
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Multiwall carbon nanotubes purification and oxidation by nitric acid studied by the FTIR and electron spectroscopy methods
چکیده انگلیسی

A process of wet chemical purification, oxidation and functionalization of multiwall carbon nanotubes (MWCNTs) is investigated to determine the structural and chemical changes in atomic bonding caused by oxidation in an aqueous solution of concentrated (68%) HNO3 at 120 °C. The original and oxidized multiwall carbon nanotubes (ox-MWCNTs) are studied using TEM, SEM, elemental analysis, mass spectrometry, EDX, FTIR, Raman and electron spectroscopy methods. The proposed wet chemical purification and modification of “as-prepared” MWCNTs, contaminated with amorphous carbon, catalyst supports and metallic catalysts removes effectively all impurities (traces of Al, Fe and amorphous carbon) resulting from the catalytic reaction applied for synthesizing the “as-prepared” MWCNTs. The proposed wet chemical purification of MWCNTs changes their hydrophobic nature to hydrophilic.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 501, Issue 1, 2 July 2010, Pages 77–84
نویسندگان
, , , , , , ,