کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1618469 | 1005706 | 2010 | 8 صفحه PDF | دانلود رایگان |

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.
Journal: Journal of Alloys and Compounds - Volume 501, Issue 1, 2 July 2010, Pages 77–84