Please use this identifier to cite or link to this item:
|Title:||Silicon carbide nanotubes as potential gas sensors for CO and HCN detection|
|Authors:||Wu, R.Q. |
|Citation:||Wu, R.Q., Yang, M., Lu, Y.H., Feng, Y.P., Huang, Z.G., Wu, Q.Y. (2008-10-16). Silicon carbide nanotubes as potential gas sensors for CO and HCN detection. Journal of Physical Chemistry C 112 (41) : 15985-15988. ScholarBank@NUS Repository. https://doi.org/10.1021/jp804727c|
|Abstract:||Semiconducting carbon nanotubes (CNTs) have demonstrated extreme sensitivity to molecules such as NH3, NO, NO2, ans so forth. Yet, intrinsic CNTs cannot be used to detect some highly toxic molecules such as CO and HCN. In this article, we examine the possibility of silicon carbide nanotubes (SiCNTs) as a potential gas sensor for CO and HCN detection by first-principles calculations based on density functional theory (DFT). It is found that CO and HCN molecules can be absorbed to Si atoms on the wall of SiCNTs with binding energies as high as 0.70 eV and can attract finite charge from SiCNTs. By comparison to oxygen absorption on CNTs, we infer that molecular CO and HCN absorbed on SiCNTs can induce significant change in the conductivity of SiCNTs. In view of the high portion of the reactive area, SiCNTs can be potential efficient gas sensors for CO and HCN detection. © 2008 American Chemical Society.|
|Source Title:||Journal of Physical Chemistry C|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 14, 2018
WEB OF SCIENCETM
checked on Jun 19, 2018
checked on Jun 29, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.