Study on the stability of Si, Ge, Fe and Co in the interior surface of a metallic carbon nanotube for hydrogen storage
سال انتشار: 1394
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 286
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شناسه ملی سند علمی:
JR_IJHFC-2-3_006
تاریخ نمایه سازی: 21 فروردین 1397
چکیده مقاله:
In this article, we have performed calculations for studying the stability of carbon group elements, such as Si and Ge, and also magnetic elements, like Fe and Co, via first principle investigations. We found that Si and Ge decoupled from the interior surface of carbon nanotubes, this fact was independent in curvature, radius, conductivity and number of atoms in the carbon nanotubes. But the magneticelements bonded to the surface of the tube via the electronegativity factor. The binding energy calculated for Co was -3.82 eV which is more stable than that of Fe (-2.65 eV) due to a larger decrease in its magnetization. The magnetization of Fe and Co changed from 4.00 μB to 3.40 μB and 3.00 μB to 1.75μB, respectively. Finally, we came to the conclusion that carbon group elements are favorable for hydrogen absorption inside the carbon nanotube, whereas magnetic elements are suitable for hydrogen adsorption on the nanotube surface.
کلیدواژه ها:
نویسندگان
S.Vahid Hosseini
Renewable Energies, Magnetism and Nanotechnology Research Lab, Ferdowsi University of Mashhad, Mashhad, Iran Department of Physics, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
Hadi Arabi
Renewable Energies, Magnetism and Nanotechnology Research Lab, Ferdowsi University of Mashhad, Mashhad, Iran Department of Physics, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
Ahmad Kompany
Department of Physics, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran