Cap removal and shortening of double-walled and very-thin multi-walled carbon nanotubes under mild oxidative conditions

被引：43

作者：

Marega, Riccardo ^{[2
]}

Accorsi, Gianluca ^{[4
]}

Meneghetti, Moreno ^{[3
]}

Parisini, Andrea ^{[5
]}

Prato, Maurizio ^{[2
]}

Bonifazi, Davide ^{[1
,2
]}

机构：

[1] Univ Namur, Dept Chem, B-5000 Namur, Belgium

[2] Univ Trieste, INSTM UdR Trieste, Dipartimento Sci Farmaceut, CENMAT,Ctr Excellence Nanostruct Mat, I-34127 Trieste, Italy

[3] Univ Padua, Dipartimento Sci Chim, I-35131 Padua, Italy

[4] CNR, Ist Sintesi & Fotoreattivita, Mol Photosci Grp, Bologna, Italy

[5] CNR, Ist Microelettron & Microsistemi, I-40136 Bologna, Italy

来源：

CARBON | 2009年 / 47卷 / 03期

关键词：

SELECTIVE OXIDATION; RAMAN-SPECTROSCOPY; FULLERENE PIPES; PURIFICATION; DNA; DELIVERY; TRANSPORTERS; RECOGNITION; ADSORPTION; CHEMISTRY;

D O I：

10.1016/j.carbon.2008.10.049

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：

Homogeneous carbon-based materials were prepared for endohedral functionalization starting from carbon nanotubes (CNT) samples mainly containing double-walled and very-thin multi-walled CNTs. Comprehensive structural characterization of end-opened and shortened CNTs, which were prepared under mild oxidative conditions using dilute aqueous H2O2 solutions, is reported. 90% of the 400 measured nanotubes were shorter than 1 mu m with an average value of about 500 nm. TEM observations have confirmed the shortening and opening of the end caps. TGA analysis and Raman spectroscopy showed a reduced impurity content after the oxidation treatment. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：675 / 682

页数：8

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