Controlled Synthesis of Single-Walled Carbon Nanotubes in an Aerosol Reactor

被引：39

作者：

Tian, Ying ^{[1
,2
]}

Nasibulin, Albert G. ^{[1
,2
]}

Aitchison, Brad ^{[3
]}

Nikitin, Timur ^{[4
]}

von Pfaer, Jan

Jiang, Hua ^{[1
,2
]}

Zhu, Zhen ^{[1
,2
]}

Khriachtchev, Leonid ^{[4
]}

Brown, David P. ^{[3
]}

Kauppinen, Esko I. ^{[1
,2
]}

机构：

[1] Aalto Univ, NanoMat Grp, Dept Appl Phys, Aalto 00076, Finland

[2] Aalto Univ, Ctr New Mat, Aalto 00076, Finland

[3] Canatu Ltd, Espoo 02150, Finland

[4] Univ Helsinki, Dept Chem, Helsinki 00014, Finland

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 15期

基金：

芬兰科学院;

关键词：

GROWTH; NANOPARTICLES;

D O I：

10.1021/jp112291f

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：

The growth mechanis and influence of synthesis parameters on the properties of single-walled carbon nanotubes (SWNTs) produced by ferrocene vapor decomposition in a carbon monoxide atmosphere have been investigated in detail by a combined study of Raman and UV-vis-NIR absorption spectroscopy and transmission electron microscopy (TEM) CO2 plays an essential role in selective etching of small diameter nanotubes and the purification of SWNTs. This etching effect is beneficial to narrow the diameter distribution and to control the average diameter of SWNTs. Increasing the synthesis temperature results in the formation of larger catalyst particles due to a higher agglomeration rate, thereby forming larger diameter nanotubes. Decreasing the CO flow, and thus lengthening the agglomeration time also provides the possibility to enlarge the diameter of SWNTs. Therefore, by varying the growth parameters, the mean diameter of SWNTs can be effectively changed from 1.2 to 1.8 nm to satisfy the needs of various applications.

引用

页码：7309 / 7318

页数：10

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