The role of structural defects on the adsorption of NO2 on carbon nanotubes (CNTs) is analyzed here by means of both statical density functional theory calculations and Car-Parrinello molecular dynamics and further confirmed by X-ray photoelectron spectroscopy measurements. The interaction of a NO2 molecule with an active site produced by a single vacancy on the sidewall follows two possible reaction routes, leading to the formation of a C-N bond or to dissociation of NO2. Accounting for defective adsorption sites allows a better understanding of microscopic mechanisms involved in technological applications of CNTs, e.g., gassensing devices.
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Titolo: | Vacancy-induced chemisorption of NO2 on carbon nanotubes: A combined theoretical and experimental study | |
Autori: | ||
Data di pubblicazione: | 2005 | |
Rivista: | ||
Abstract: | The role of structural defects on the adsorption of NO2 on carbon nanotubes (CNTs) is analyzed he...re by means of both statical density functional theory calculations and Car-Parrinello molecular dynamics and further confirmed by X-ray photoelectron spectroscopy measurements. The interaction of a NO2 molecule with an active site produced by a single vacancy on the sidewall follows two possible reaction routes, leading to the formation of a C-N bond or to dissociation of NO2. Accounting for defective adsorption sites allows a better understanding of microscopic mechanisms involved in technological applications of CNTs, e.g., gassensing devices. | |
Handle: | http://hdl.handle.net/11391/37726 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |