Multiwall carbon nanotubes purification and oxidation by nitric acid studied by the FTIR and electron spectroscopy methods

被引：497

作者：

Stobinski, L. ^{[1
,2
]}

Lesiak, B. ^{[1
]}

Koever, L. ^{[3
]}

Toth, J. ^{[3
]}

Biniak, S. ^{[4
]}

Trykowski, G. ^{[4
]}

Judek, J. ^{[5
]}

机构：

[1] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland

[2] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland

[3] Hungarian Acad Sci ATOMKI, Inst Nucl Res, H-4001 Debrecen, Hungary

[4] Nicholas Copernicus Univ, Fac Chem, PL-87100 Torun, Poland

[5] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 501卷 / 01期

关键词：

Multiwall carbon nanotubes; Purification; Functionalization; FTIR; Raman; Electron spectroscopy methods; ENERGY-LOSS SPECTROSCOPY; ETHENE-RICH STREAMS; SELECTIVE HYDROGENATION; PALLADIUM CATALYSTS; FUNCTIONAL-GROUPS; RAMAN-SCATTERING; FUEL-CELLS; GRAPHITE; SURFACES; SPECTRA;

D O I：

10.1016/j.jallcom.2010.04.032

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 degrees 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. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：77 / 84

页数：8

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