Encapsulation of Molecular Nitrogen in Multiwall CNx Nanotubes Научная публикация
Конференция |
21st International Winterschool on Electronic Properties of Novel Materials 10-17 мар. 2007 , Kirchberg |
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Журнал |
Physica Status Solidi (B): Basic Research
ISSN: 0370-1972 , E-ISSN: 1521-3951 |
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Вых. Данные | Год: 2007, Том: 244, Номер: 11, Страницы: 4078-4081 Страниц : 4 DOI: 10.1002/pssb.200776151 | ||||||
Ключевые слова | CARBON NANOTUBES; N-2; DENSITY | ||||||
Авторы |
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Организации |
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Информация о финансировании (2)
1 | Российский фонд фундаментальных исследований | 06-03-32816 |
2 | Helmholtz-Centre Berlin for Materials and Energy BESSY |
Реферат:
Multiwall CNx nanotubes have been grown in the result of acetonitrile decomposition over Fe catalyst (CVD method). The random nanotubes samples have been produced by classical technique using catalyst nanoparticles formed by iron bimaleate thermolysis. The aligned nanotubes have been synthesized by aerosol assisted CVD method where ferrocene was used as a catalyst source. X-ray photoelectron spectroscopy (XPS) showed the random sample contains two kinds of nitrogen, while additional high-energy peak was detected in the N 1s-spectrum of the aligned CNx nanotubes. X-ray absorption spectra measured near the N K-edge (NEXAFS) of the samples exhibited three peaks for both type of CNx nanotubes. The relative intensity of the high-energy peak was found to be much higher in the spectrum of aligned nanotubes. Assignment of the NEXAFS peaks was made using results of quantum-chemical calculations on carbon tube model incorporating pyridinic, three-fold coordinated and molecule nitrogen. The high-energy peak was shown to correspond to N2 molecules and its absence in the XPS spectrum of random CNx nanotubes indicates the gaseous nitrogen is mainly concentrated in the interior region of nanotubes. The larger encapsulation of molecules in the aligned CNx nanotubes could be due to the higher diffusion of nitrogen atoms trough the catalytic particles formed directly in the CVD process.
Библиографическая ссылка:
Bulusheva L.G.
, Okotrub A.V.
, Kudashov A.G.
, Pazhetnov E.M.
, Boronin A.I.
, Vyalikh D.V.
Encapsulation of Molecular Nitrogen in Multiwall CNx Nanotubes
Physica Status Solidi (B): Basic Research. 2007. V.244. N11. P.4078-4081. DOI: 10.1002/pssb.200776151 WOS Scopus РИНЦ
Encapsulation of Molecular Nitrogen in Multiwall CNx Nanotubes
Physica Status Solidi (B): Basic Research. 2007. V.244. N11. P.4078-4081. DOI: 10.1002/pssb.200776151 WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 24 апр. 2007 г. |
Принята к публикации: | 10 сент. 2007 г. |
Опубликована online: | 19 окт. 2007 г. |
Опубликована в печати: | 1 нояб. 2007 г. |
Идентификаторы БД:
Web of science | WOS:000251355800050 |
Scopus | 2-s2.0-36849035760 |
РИНЦ | 13538779 |
Chemical Abstracts | 2007:1422930 |
Chemical Abstracts (print) | 148:106889 |
OpenAlex | W2084233194 |