On the Possible Nature of Armchair-Zigzag Structure Formation and Heat Capacity Decrease in MWCNTs
Structural disorder and temperature behavior of specific heat in multi walled carbon nanotubes (MWCNTs) have been investigated. The results of X-ray diffractometry, Raman spectroscopy, and transmission electron microscopy (TEM) images are analyzed. The thermodynamic theory of the zigzag-armchair dom...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/2/518 |
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| author | Alexander Ponomarev Valeriy Egorushkin Nadezhda Bobenko Maksym Barabashko Anastasiya Rezvanova Anna Belosludtseva |
| author_facet | Alexander Ponomarev Valeriy Egorushkin Nadezhda Bobenko Maksym Barabashko Anastasiya Rezvanova Anna Belosludtseva |
| author_sort | Alexander Ponomarev |
| collection | DOAJ |
| description | Structural disorder and temperature behavior of specific heat in multi walled carbon nanotubes (MWCNTs) have been investigated. The results of X-ray diffractometry, Raman spectroscopy, and transmission electron microscopy (TEM) images are analyzed. The thermodynamic theory of the zigzag-armchair domain structure formation during nanotube synthesis is developed. The influence of structural disorder on the temperature behavior of specific heat is investigated. The size of domains was estimated at ~40 nm. A decrease in heat capacity is due to this size effect. The revealed dependence of the heat capacity of MWCNTs on the structural disorder allows control over thermal properties of nanotubes and can be useful for the development of thermoelectric, thermal interface materials and nanofluids based on them. |
| first_indexed | 2024-03-10T01:03:53Z |
| format | Article |
| id | doaj.art-d154209d4a4e49ae93ea8b78178b9b99 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:03:53Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-d154209d4a4e49ae93ea8b78178b9b992023-11-23T14:30:25ZengMDPI AGMaterials1996-19442022-01-0115251810.3390/ma15020518On the Possible Nature of Armchair-Zigzag Structure Formation and Heat Capacity Decrease in MWCNTsAlexander Ponomarev0Valeriy Egorushkin1Nadezhda Bobenko2Maksym Barabashko3Anastasiya Rezvanova4Anna Belosludtseva5Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences (ISPMS SB RAS), 2/4, pr. Akademicheskii, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences (ISPMS SB RAS), 2/4, pr. Akademicheskii, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences (ISPMS SB RAS), 2/4, pr. Akademicheskii, 634055 Tomsk, RussiaB. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine (B. Verkin ILTPE NASU), 47 Nauky Ave., 61103 Kharkov, UkraineInstitute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences (ISPMS SB RAS), 2/4, pr. Akademicheskii, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences (ISPMS SB RAS), 2/4, pr. Akademicheskii, 634055 Tomsk, RussiaStructural disorder and temperature behavior of specific heat in multi walled carbon nanotubes (MWCNTs) have been investigated. The results of X-ray diffractometry, Raman spectroscopy, and transmission electron microscopy (TEM) images are analyzed. The thermodynamic theory of the zigzag-armchair domain structure formation during nanotube synthesis is developed. The influence of structural disorder on the temperature behavior of specific heat is investigated. The size of domains was estimated at ~40 nm. A decrease in heat capacity is due to this size effect. The revealed dependence of the heat capacity of MWCNTs on the structural disorder allows control over thermal properties of nanotubes and can be useful for the development of thermoelectric, thermal interface materials and nanofluids based on them.https://www.mdpi.com/1996-1944/15/2/518structural disordercarbon nanotubesdomain structureheat capacityphononssize effect |
| spellingShingle | Alexander Ponomarev Valeriy Egorushkin Nadezhda Bobenko Maksym Barabashko Anastasiya Rezvanova Anna Belosludtseva On the Possible Nature of Armchair-Zigzag Structure Formation and Heat Capacity Decrease in MWCNTs Materials structural disorder carbon nanotubes domain structure heat capacity phonons size effect |
| title | On the Possible Nature of Armchair-Zigzag Structure Formation and Heat Capacity Decrease in MWCNTs |
| title_full | On the Possible Nature of Armchair-Zigzag Structure Formation and Heat Capacity Decrease in MWCNTs |
| title_fullStr | On the Possible Nature of Armchair-Zigzag Structure Formation and Heat Capacity Decrease in MWCNTs |
| title_full_unstemmed | On the Possible Nature of Armchair-Zigzag Structure Formation and Heat Capacity Decrease in MWCNTs |
| title_short | On the Possible Nature of Armchair-Zigzag Structure Formation and Heat Capacity Decrease in MWCNTs |
| title_sort | on the possible nature of armchair zigzag structure formation and heat capacity decrease in mwcnts |
| topic | structural disorder carbon nanotubes domain structure heat capacity phonons size effect |
| url | https://www.mdpi.com/1996-1944/15/2/518 |
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