Effect of Hydrogen on Carbon Diffusion on Ni(111)

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概要

• 論文の詳細を見る

• In the chemical vapor deposition process for carbon nanotube growth using catalytic particles, many carbon atoms as well as hydrogen atoms coexist on actual surfaces of catalysts and their mutual interaction may change the adsorption and diffusion properties of carbon atoms. To investigate the effect of hydrogen on carbon diffusion on the Ni(111) surface we have performed pseudopotential density-functional calculations. The diffusion barriers of CHx ($x=1$, 2, 3) on Ni(111) are obtained and compared with that of a single carbon atom. The diffusion barrier decreases with the presence of attached hydrogens, which implies that such adsorbates with more hydrogen are likely to diffuse more easily.

• INSTITUTE OF PURE AND APPLIED PHYSICSの論文
• 2004-02-15

著者

• Shin Young-han

  Department Of Physics Sejong University:center For Nanotubes And Nanostructured Composites. Sungkyun

• Shin Young-Han

  Department of Physics, Sejong University, Seoul 143-747, Korea

• Hong Suklyun

  Department of Physics and Institute of Fundamental Physics, Sejong University, Seoul 143-747, Korea

関連論文

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• Effect of Hydrogen on Carbon Diffusion on Ni(111)

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