Open AccessThe effects of liquid-phase oxidation of multiwall carbon nanotubes on their surface characteristics
Author(s) -
Igor Burmistrov,
Dmitry S. Muratov,
И. А. Ильиных,
Еvgeny Kolesnikov,
Anna Godymchuk,
Денис Кузнецов
Publication year - 2016
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/112/1/012004
Subject(s) - nitric acid , carbon nanotube , adsorption , titration , materials science , surface modification , phase (matter) , chemical engineering , nitrogen , carbon fibers , liquid phase , chemistry , nanotechnology , inorganic chemistry , organic chemistry , composite material , metallurgy , physics , composite number , engineering , thermodynamics
The development of new sorbents based on nanostructured carbon materials recently became a perspective field of research. Main topic of current study is to investigate the effect of different regimes of multiwall carbon nanotubes (MWCNT) surface modification process on their structural characteristics. MWCNT samples were treated with nitric acid at high temperature. Structural properties were studied using low temperature nitrogen adsorption and acid-base back titration methods. The study showed that diluted nitric acid does not affect MWCNT structure. Concentrated nitric acid treatment leads to formation of 2.8 carboxylic groups per 1 nm{2} of the sample surface