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Electronic and vibrational spectra of hydrogenated carbon single-wall nanotubesстатья
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Bazhenov A.V., Fursova T.N., Bashkin I.O., Antonov V.E., Kondrat’eva I.V., Krestinin A.V., Shul’ga Yu M.
- Журнал: Fullerenes Nanotubes and Carbon Nanostructures
- Том: 14
- Номер: 2-3
- Год издания: 2006
- Издательство: Marcel Dekker Inc.
- Местоположение издательства: United States
- Первая страница: 165
- Последняя страница: 170
- DOI: 10.1080/15363830600663487
- Аннотация: Carbon single-wall nanotubes (SWNTs) were loaded with 5.4 wt.% H by exposing to a hydrogen pressure of 50kbar at 500 degrees C. Investigation of the optical transmission spectra showed that the hydrogenation significantly suppressed the high-frequency conductivity sigma of free carries in the SWNTs and also eliminated the hand-to-hand electronic transitions. Instead, a narrow line of the C-H stretching vibrational mode appeared at 2845cm(-1). A gradual removal of hydrogen from the hydrogenated SWNTs by vacuum annealing at T >= 500 degrees C resulted in an approximately linear decrease in the intensity of this line with decreasing hydrogen content. This evidenced that most H atoms in the hydrogenated SWNTs were covalently bonded to the carbon atoms. The complete removal of hydrogen by vacuum annealing at 700 degrees C partly restored sigma and the intensity of the electronic transitions characteristic of the initial SWNTs.
- Добавил в систему: Антонов Владимир Евгеньевич