Mechanical Properties of C3N Nanotubes from Molecular Dynamics Simulation Studies
Abstract
Although the properties of carbon nanotubes (CNTs) are very well-known and are still extensively studied, a thorough understanding of other carbon-based nanomaterials such as C 3 N nanotubes (C 3 NNTs) is still missing. In this article, we used molecular dynamics simulation to investigate the effects of parameters such as chirality, diameter, number of walls, and temperature on the mechanical properties of C 3 N nanotubes, C 3 N nanobuds, and C 3 NNTs with various kinds of defects. We also modeled and tested the corresponding CNTs to validate the results and understand how replacing one C atom of CNT by one N atom affects the properties. Our results demonstrate that the Young's modulus of single-walled C 3 NNTs (SWC 3 NNTs) increased with diameter, irrespective of the chirality, and was higher in armchair SWC 3 NNTs than in zigzag ones, unlike double-walled C 3 NNTs. Besides, adding a second and then a third wall to SWC 3 NNTs significantly improved their properties. In contrast, the properties of C 3 N nanobuds produced by attaching an increasing number of C 60 fullerenes gradually decreased. Moreover, considering C 3 NNTs with different types of defects revealed that two-atom vacancies resulted in the greatest reduction of all the properties studied, while Stone-Wales defects had the lowest effect on them.
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Salmankhani et al. - 2020 - Mechanical Properties of C3N Nanotubes from Molecu.pdf (10.7 Mo)
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Origin | Publication funded by an institution |
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