Nanotubes with well-defined structure: Single- and double-walled imogolites
Lourenco MP, Guimaraes L, Da Silva MC, De Oliveira C, Heine T, Duarte HA (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Book Volume: 118
Pages Range: 5945-5953
Journal Issue: 11
DOI: 10.1021/jp411086f
Abstract
We have investigated the structure and electronic structure of single- and double-walled imogolite nanotubes with Ge and Si as group IV element. While it is known from experiment, and in the case of single-walled tubes confirmed by theory, imogolite nanotubes are monodisperse in diameter. We show that imogolite tubes are also showing a preferred chirality (zigzag), resulting from the hydrogen-bond network on the tube surfaces, and that there is an exceptionally stable form of intertube interaction that supports the formation of monodisperse double-walled imogolite nanotubes. The strongest stabilization of double-walled tubes has been found for tube indexes with nine units of difference around the circumference, and the minimum structure is found for the (12,0)(21,0) tube in the case of germanium imogolite and (9,0)(18,0) for imogolite. The electronic structure is only slightly affected by these geometric factors, as are the mechanical properties, which show Young moduli of 320-370 GPa, thus being in the same range as other clay mineral nanotubes. © 2014 American Chemical Society.
Involved external institutions
Universidade Federal de Minas Gerais (UFMG)
Brazil (BR)
Federal University of São João del-Rei / Universidade Federal de São João del-Rei (UFSJ)
Brazil (BR)
Universität Bremen
Germany (DE)
Brazil (BR)
Federal University of São João del-Rei / Universidade Federal de São João del-Rei (UFSJ)
Brazil (BR)
Universität Bremen
Germany (DE)
How to cite
APA:
Lourenco, M.P., Guimaraes, L., Da Silva, M.C., De Oliveira, C., Heine, T., & Duarte, H.A. (2014). Nanotubes with well-defined structure: Single- and double-walled imogolites. Journal of Physical Chemistry C, 118(11), 5945-5953. https://doi.org/10.1021/jp411086f
MLA:
Lourenco, Maicon P., et al. "Nanotubes with well-defined structure: Single- and double-walled imogolites." Journal of Physical Chemistry C 118.11 (2014): 5945-5953.
BibTeX: Download