Covalent Modification of Single Wall Carbon Nanotubes Upon Gamma Irradiation in Aqueous Media
2011
Аутори
Jovanović, Svetlana P.Marković, Zoran M.
Kleut, Duška
Tošić, Dragana
Kepić, Dejan P.
Marinović-Cincović, Milena
Holclajtner-Antunović, Ivanka D.
Todorović-Marković, Biljana
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
Single wall carbon nanotubes (SWCNTs) were exposed to gamma radiation, absorbing the doses of 25, 50 and 100 kGy in aqueous environment. After the irradiation treatment, the changes in the structure were studied using Fourier transform Infrared and Raman spectroscopy, thermogravimetric analysis and atomic force microscopy. Fourier Transform Infrared Spectroscopy has shown that the irradiation of SWCNTs in aqueous environment leads to covalent functionalization of SWCNTs. The irradiation of water leads to its radiolysis and the formation of free radical species of different types. These species react with nanotube sidewalls and in such way carboxylic and hydroxylic groups are covalently bonded to the sidewalls of SWCNTs. Thermogravimetric analysis was used to estimate the total amount of covalently bonded groups. The highest ratio of covalently bonded groups appears in nanotubes irradiated with the 100 kGy dose. Raman spectroscopy proved that the increase in irradiation doses leads to a...n increase of structural disorder of SWCNTs, presumably in the form of defects in carbon nanotube walls. Examination of I-D to I-G ratio shows a three times larger degree of structural disorder after the irradiation treatment with 100 kGy. The analysis of carbon nanotube Raman spectra RBM bands determined the presence of both semiconducting and metallic carbon nanotubes after gamma irradiation treatment. These measurements prove that gamma irradiation treatments have a nonselective effect regarding different chirality and therefore conductance of nanotubes. Atomic force microscopy shows a significant carbon nanotube shortening as the effect of gamma radiation treatment. Nanotubes with length between 500 nm and 1 mu m are predominant.
Кључне речи:
Carbon nanotubes / Covalent functionalization / Gamma irradiation / Raman spectroscopyИзвор:
Hemijska industrija, 2011, 65, 5, 479-487Финансирање / пројекти:
- Танки слојеви једнослојних угљеничних нанотуба и графена за примену у електроници (RS-MESTD-Basic Research (BR or ON)-172003)
DOI: 10.2298/HEMIND110531050J
ISSN: 0367-598X
WoS: 000300029700001
Scopus: 2-s2.0-80755185350
Колекције
Институција/група
VinčaTY - JOUR AU - Jovanović, Svetlana P. AU - Marković, Zoran M. AU - Kleut, Duška AU - Tošić, Dragana AU - Kepić, Dejan P. AU - Marinović-Cincović, Milena AU - Holclajtner-Antunović, Ivanka D. AU - Todorović-Marković, Biljana PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4677 AB - Single wall carbon nanotubes (SWCNTs) were exposed to gamma radiation, absorbing the doses of 25, 50 and 100 kGy in aqueous environment. After the irradiation treatment, the changes in the structure were studied using Fourier transform Infrared and Raman spectroscopy, thermogravimetric analysis and atomic force microscopy. Fourier Transform Infrared Spectroscopy has shown that the irradiation of SWCNTs in aqueous environment leads to covalent functionalization of SWCNTs. The irradiation of water leads to its radiolysis and the formation of free radical species of different types. These species react with nanotube sidewalls and in such way carboxylic and hydroxylic groups are covalently bonded to the sidewalls of SWCNTs. Thermogravimetric analysis was used to estimate the total amount of covalently bonded groups. The highest ratio of covalently bonded groups appears in nanotubes irradiated with the 100 kGy dose. Raman spectroscopy proved that the increase in irradiation doses leads to an increase of structural disorder of SWCNTs, presumably in the form of defects in carbon nanotube walls. Examination of I-D to I-G ratio shows a three times larger degree of structural disorder after the irradiation treatment with 100 kGy. The analysis of carbon nanotube Raman spectra RBM bands determined the presence of both semiconducting and metallic carbon nanotubes after gamma irradiation treatment. These measurements prove that gamma irradiation treatments have a nonselective effect regarding different chirality and therefore conductance of nanotubes. Atomic force microscopy shows a significant carbon nanotube shortening as the effect of gamma radiation treatment. Nanotubes with length between 500 nm and 1 mu m are predominant. T2 - Hemijska industrija T1 - Covalent Modification of Single Wall Carbon Nanotubes Upon Gamma Irradiation in Aqueous Media VL - 65 IS - 5 SP - 479 EP - 487 DO - 10.2298/HEMIND110531050J ER -
@article{ author = "Jovanović, Svetlana P. and Marković, Zoran M. and Kleut, Duška and Tošić, Dragana and Kepić, Dejan P. and Marinović-Cincović, Milena and Holclajtner-Antunović, Ivanka D. and Todorović-Marković, Biljana", year = "2011", abstract = "Single wall carbon nanotubes (SWCNTs) were exposed to gamma radiation, absorbing the doses of 25, 50 and 100 kGy in aqueous environment. After the irradiation treatment, the changes in the structure were studied using Fourier transform Infrared and Raman spectroscopy, thermogravimetric analysis and atomic force microscopy. Fourier Transform Infrared Spectroscopy has shown that the irradiation of SWCNTs in aqueous environment leads to covalent functionalization of SWCNTs. The irradiation of water leads to its radiolysis and the formation of free radical species of different types. These species react with nanotube sidewalls and in such way carboxylic and hydroxylic groups are covalently bonded to the sidewalls of SWCNTs. Thermogravimetric analysis was used to estimate the total amount of covalently bonded groups. The highest ratio of covalently bonded groups appears in nanotubes irradiated with the 100 kGy dose. Raman spectroscopy proved that the increase in irradiation doses leads to an increase of structural disorder of SWCNTs, presumably in the form of defects in carbon nanotube walls. Examination of I-D to I-G ratio shows a three times larger degree of structural disorder after the irradiation treatment with 100 kGy. The analysis of carbon nanotube Raman spectra RBM bands determined the presence of both semiconducting and metallic carbon nanotubes after gamma irradiation treatment. These measurements prove that gamma irradiation treatments have a nonselective effect regarding different chirality and therefore conductance of nanotubes. Atomic force microscopy shows a significant carbon nanotube shortening as the effect of gamma radiation treatment. Nanotubes with length between 500 nm and 1 mu m are predominant.", journal = "Hemijska industrija", title = "Covalent Modification of Single Wall Carbon Nanotubes Upon Gamma Irradiation in Aqueous Media", volume = "65", number = "5", pages = "479-487", doi = "10.2298/HEMIND110531050J" }
Jovanović, S. P., Marković, Z. M., Kleut, D., Tošić, D., Kepić, D. P., Marinović-Cincović, M., Holclajtner-Antunović, I. D.,& Todorović-Marković, B.. (2011). Covalent Modification of Single Wall Carbon Nanotubes Upon Gamma Irradiation in Aqueous Media. in Hemijska industrija, 65(5), 479-487. https://doi.org/10.2298/HEMIND110531050J
Jovanović SP, Marković ZM, Kleut D, Tošić D, Kepić DP, Marinović-Cincović M, Holclajtner-Antunović ID, Todorović-Marković B. Covalent Modification of Single Wall Carbon Nanotubes Upon Gamma Irradiation in Aqueous Media. in Hemijska industrija. 2011;65(5):479-487. doi:10.2298/HEMIND110531050J .
Jovanović, Svetlana P., Marković, Zoran M., Kleut, Duška, Tošić, Dragana, Kepić, Dejan P., Marinović-Cincović, Milena, Holclajtner-Antunović, Ivanka D., Todorović-Marković, Biljana, "Covalent Modification of Single Wall Carbon Nanotubes Upon Gamma Irradiation in Aqueous Media" in Hemijska industrija, 65, no. 5 (2011):479-487, https://doi.org/10.2298/HEMIND110531050J . .