Preparation of highly oxidized nitrogen-doped carbon nanotubes

被引：31

作者：

Wei, Jinquan ^{[1
,2
]}

Lv, Ruitao ^{[3
]}

Guo, Ning ^{[1
]}

Wang, Hongguang ^{[1
]}

Bai, Xi ^{[1
]}

Mathkar, Akshay ^{[2
]}

Kang, Feiyu ^{[3
]}

Zhu, Hongwei ^{[1
]}

Wang, Kunlin ^{[1
]}

Wu, Dehai ^{[1
]}

Vajtai, Robert ^{[2
]}

Ajayan, Pulickel M. ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China

[2] Rice Univ, Dept Mech Engn & Mat Sci, Houston, TX 77005 USA

[3] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

NANOTECHNOLOGY | 2012年 / 23卷 / 15期

关键词：

GRAPHENE OXIDE; CHEMISTRY;

D O I：

10.1088/0957-4484/23/15/155601

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A method for the preparation of highly oxidized nitrogen-doped carbon nanotubes (N-CNTs) from KMnO4 + H2SO4 solution is described. The atomic ratio of C/O in oxidized N-CNTs is as low as 1.2. The x-ray photoelectron spectroscopy results show that about 75% of the carbon atoms are oxidized and bound to oxygen-containing functional groups. The oxidation reaction mainly occurs at the outer sidewalls, which destroys the graphene stack to an sp(3)-rich structure and helps to preserve the tubular structure of the inner N-CNTs. The oxidized N-CNTs show an energy gap of similar to 2.1 eV.

引用

页数：5

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