Effect of Acid Treatment on the Functionalization of Surface, Structural and Textural Properties of Carbon Nanotubes Taunit Full article
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Eurasian Chemico-Technological Journal
ISSN: 1562-3920 |
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| Output data | Year: 2019, Volume: 21, Number: 4, Pages: 291-302 Pages count : 12 DOI: 10.18321/ectj886 | ||
| Tags | carbon nanotubes, surface oxidation, oxygen-bearing groups, Raman spectroscopy, FTIR spectroscopy | ||
| Authors |
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| Affiliations |
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Abstract:
The role of acid treatment of Taunit carbon nanotubes in the formation of oxygencontaining functional groups on its surface as well as morphological and textural properties was studied. Acid treatment was carried out in an HNO3 solution or its mixture with H2SO4 under mild conditions (85 °C/1 h) with subsequent washing with distilled water or without washing. Properties of the initial and oxidized samples were investigated using elemental carbon, hydrogen, nitrogen, oxygen (CHNO) analysis, BET (Brunauer-Emmett-Teller) determination of surface area, X-ray diffraction, Raman and Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy, and hydrogen temperature-programmed reduction. Treatment with HNO3 and HNO3/H2SO4 mixture was shown to be efficient for the formation of
various oxygen-containing groups on the Taunit surface; therewith, the water washing step also contributed to functionalization of the surface. Depending on the oxidant, acid treatment increased graphite and oxygen content in the samples by a factor of 3‒4.5. Treatment with HNO3 without water washing exerted a weak effect on the graphite structure ordering, the concentration of aliphatic groups was high as compared to other oxidation conditions. Treatment of Taunit with the HNO3/H2SO4 mixture, on the contrary, increased the number of defects in graphite
layers and decreased the concentration of aliphatic structures.
Cite:
Ismagilov Z.R.
, Yashnik S.A.
, Shikina N.V.
, Matus E.V.
, Efimova O.S.
, Popova A.N.
, Nikitin A.P.
Effect of Acid Treatment on the Functionalization of Surface, Structural and Textural Properties of Carbon Nanotubes Taunit
Eurasian Chemico-Technological Journal. 2019.
V.21. N4. P.291-302. DOI: 10.18321/ectj886
WOS
Scopus
РИНЦ
AN
OpenAlex
Effect of Acid Treatment on the Functionalization of Surface, Structural and Textural Properties of Carbon Nanotubes Taunit
Eurasian Chemico-Technological Journal. 2019.
V.21. N4. P.291-302. DOI: 10.18321/ectj886
WOS
Scopus
РИНЦ
AN
OpenAlex
Files:
Full text from publisher
Dates:
| Submitted: | Mar 15, 2019 |
| Accepted: | Jun 15, 2019 |
| Published online: | Dec 17, 2019 |
Identifiers:
| Web of science: | WOS:000505618100002 |
| Scopus: | 2-s2.0-85077698040 |
| Elibrary: | 43222463 |
| Chemical Abstracts: | 2020:2352362 |
| OpenAlex: | W2998246728 |