Affordable Access

Publisher Website

Revealing the impact of catalyst phase transition on carbon nanotube growth by in situ Raman spectroscopy.

Authors
Type
Published Article
Journal
ACS Nano
1936-086X
Publisher
American Chemical Society
Publication Date
Volume
7
Issue
2
Pages
1100–1107
Identifiers
DOI: 10.1021/nn304064u
PMID: 23343776
Source
Medline

Abstract

The physical state of the catalyst and its impact on the growth of single-walled carbon nanotubes (SWNTs) is the subject of a long-standing debate. We addressed it here using in situ Raman spectroscopy to measure Fe and Ni catalyst lifetimes during the growth of individual SWNTs across a wide range of temperatures (500-1400 °C). The temperature dependence of the Fe catalyst lifetimes underwent a sharp increase around 1100 °C due to a solid-to-liquid phase transition. By comparing experimental results with the metal-carbon phase diagrams, we prove that SWNTs can grow from solid and liquid phase-catalysts, depending on the temperature.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments