Selective removal of metallic single-walled carbon nanotubes by combined in situ and post-synthesis oxidation

被引：54

作者：

Yu, Bing ^{[1
]}

Hou, Peng-Xiang ^{[1
]}

Li, Feng ^{[1
]}

Liu, Bilu ^{[1
]}

Liu, Chang ^{[1
]}

Cheng, Hui-Ming ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

CARBON | 2010年 / 48卷 / 10期

关键词：

FIELD-EFFECT TRANSISTORS; PREFERENTIAL DESTRUCTION; ABSORPTION-SPECTROSCOPY; FLUORESCENCE; IRRADIATION; SEPARATION;

D O I：

10.1016/j.carbon.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 combined in situ and post-synthesis gas phase oxidation approach for selective removal of metallic single-walled carbon nanotubes (m-SWCNTs) is reported. The in situ oxidation is performed by introducing a small amount of oxygen during the synthesis of SWCNTs by floating catalyst chemical vapor deposition, and the post-synthesis oxidation is conducted by heat-treating the synthesized SWCNTs in air at 400 C. A combination of characterization techniques shows that m-SWCNTs were selectively removed as a result of their higher reactive activity to oxygen compared to semiconducting SWCNTs, and the diameter distribution of the SWCNTs is narrowed to a range of 1.5-2.0 nm. The mechanism of the combined in situ and post-synthesis oxidation approach is discussed. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2941 / 2947

页数：7

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