Open AccessSimple and Low-Cost Technique for Carbon Nanotube Synthesis
Author(s) -
Mauricio Isoldi,
Edson Moriyoshi Ozono,
Daniel Luiz Rodrigues Junior,
Ronaldo Domingues Mansano
Publication year - 2020
Publication title -
ieee transactions on nanotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 82
eISSN - 1941-0085
pISSN - 1536-125X
DOI - 10.1109/tnano.2020.3028779
Subject(s) - components, circuits, devices and systems , computing and processing
Currently, the methods that use microwaves to promote the growth of carbon nanotubes (CNT) employ waveguides in their configuration. We describe a method for synthesizing CNT based on the use of a microwave plasma at atmospheric pressure, and maintained by a resonant cavity. The replacement of waveguides by the resonant cavity results in deposition areas greater than 15 cm2, and is therefore not limited by the equipment configuration, since plasma is formed in almost the entire length of the quartz tube. As a result, confirmed by Raman spectroscopy and scanning and transmission electron microscopy, good quality carbon nanotubes were obtained, with an ID/IG ratio less than one unit in addition to the possibility of tuning the nanostructure diameter through process conditions.