Open AccessInfluence of total gas flow on carbon nanotube forests synthesised by water‐assisted chemical vapour deposition
Author(s) -
Liang Youxuan,
Jiang Chuan,
Zhao Bin,
Yang Junhe
Publication year - 2013
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2013.0526
Subject(s) - carbon nanotube , crystallinity , dwell time , materials science , chemical vapor deposition , chemical engineering , volumetric flow rate , yield (engineering) , diffusion , carbon fibers , deposition (geology) , catalysis , nanotechnology , chemistry , composite material , organic chemistry , thermodynamics , paleontology , sediment , engineering , medicine , clinical psychology , physics , biology , composite number
The influence of total gas flow on the growth of carbon nanotube (CNT) forests in water‐assisted chemical vapour deposition has been investigated. It was found that the average height of the CNT forests decreased gradually from 996.53 to 696.8 μm, and the growth yield decreased notably from 2.91 to 1.98 mg/cm 2 as the total flow increased, but the crystallinity and thermostability of CNT forests increased with increasing total flow. Investigation on CNT growth kinetics suggested that increasing the total flow could decrease the growth rate and shorten catalyst lifetime because of decreased gas dwell time and enhanced subsurface diffusion of Fe catalyst.