Chiral-selective growth of single-walled carbon nanotubes on Fe-based catalysts using CO as carbon source

Maoshuai, H.; V, F.P.; Chernov, A.; D, O.E.; Jiang, H.; Na, W.; Cui, H.; Sainio, J.; Zhang, W.; Jin, H.; Karppinen, M.; I, K.E.; Loiseau, A.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 2 ноября 2016 г.

Авторы: Maoshuai He, Fedotov Pavel V., Alexander Chernov, Obraztsova Elena D., Hua Jiang, Wei Na, Hongzhi Cui, Jani Sainio, Weiguo Zhang, Hua Jin, Maarit Karppinen, Kauppinen Esko I., Annick Loiseau
Журнал: Carbon
Том: 108
Год издания: 2016
Издательство: Pergamon Press Ltd.
Местоположение издательства: United Kingdom
Первая страница: 521
Последняя страница: 528
DOI: 10.1016/j.carbon.2016.07.048
Аннотация: MgO supported monometallic Fe (Fesingle bondMgO) and bimetallic FeMn (FeMnsingle bondMgO) catalysts were developed for growing carbon nanotubes using CO as carbon source. Characterizations on the Fesingle bondMgO catalyst revealed that Fe cations were well-dispersed in the porous MgO support, forming a solid solution. Since most Fe cations in the solid solution are difficult to reduce, Fesingle bondMgO can only catalyze the growth of single-walled carbon nanotubes (SWCNTs) at temperatures of 700 °C and above. While Fe cations in FeMnsingle bondMgO could be reduced at lower temperatures with the assistance of Mn, catalyzing the subsequent growth of SWCNTs. Compared with most SWCNTs grown on components like Co or Ni at ambient reaction pressure, the Fe-catalyzed SWCNTs demonstrate rather narrow chirality distributions. Particularly, preferential (6, 5) tube growth on FeMnsingle bondMgO was achieved at 600 °C. The narrow SWCNT chirality distribution could be inherently related to the high carbon solubility of Fe nanoparticles, favoring the nucleation of SWCNTs by a perpendicular mode. The present studies not only offer essential insights into SWCNT growth mechanisms, but can guide the design of novel catalysts for chirality-controlled growth of SWCNTs.
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Chiral-selective growth of single-walled carbon nanotubes on Fe-based catalysts using CO as carbon sourceстатья

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