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CO2 adsorption on the surface and open ended of Single wall carbon nanotubes (SWCNTs): A Comparative study | ||
International Journal of Nano Dimension | ||
مقاله 8، دوره 7، شماره 3، آبان 2016، صفحه 247-253 اصل مقاله (939.75 K) | ||
نوع مقاله: Reasearch Paper | ||
شناسه دیجیتال (DOI): 10.7508/ijnd.2016.03.008 | ||
نویسندگان | ||
Ashraf Sadat Ghasemi1؛ Ehsan Binaeian* 2؛ Habibollah Tayebi3؛ Yasna Modanlou Jouybari4 | ||
1Department of Chemistry, Payame Noor University (PNU), P.O. Box,19395-4697, Tehran, Islamic Republic of Iran | ||
2Chemical Engineering Department, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran | ||
3Textile Engineering Department, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran | ||
4Department of Chemical engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran | ||
چکیده | ||
Adsorption of CO2 on the surface of Single-wall zigzag (5,0) and armchair (4,4) carbon nanotubes (SWCNTs) were studied through using density functional theory (DFT) calculations. Optimizations of geometric were performed at the B3PW91 level of 6-311++G** method standard basis set using GAUSSIAN 03 package of program [1]. Structural models were optimized and adsorption energies, band gap, charge transfer and dipole momentum were obtained to investigate the nuclear magnetic resonance (NMR) and Nuclear Quadrupole Resonance (NQR) spectroscopy parameters for (CO2-CNTs) model of zigzag (5,0) and armchair (4,4) SWCNTs. Comparison of the results of the zigzag and armchair models with calculated chemical shielding, electric filed gradient tensors at the sites of carbon on the Surface and open ended revealed that CO2 adsorption has a dramatic effect on the electronic structure of SWCNTs and the more adsorption on the surface is about -1.5747eV SWCNT-S (5, 0) nanotube. | ||
کلیدواژهها | ||
GAUSSIAN 03؛ MWCNT؛ NQR adsorption؛ NMR؛ SWCNTs | ||
مراجع | ||
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