A Comparative Study of Cobalt Catalyst Behavior between Silica and Quartz Substrates for Single-Walled Carbon Nanotube Growth

• Xie Jianping

  Department of physics, Tokyo University of Science, Japan

• Inaba Takumi

  Department of physics, Tokyo University of Science, Japan

• Yamada Kazuki

  Department of physics, Tokyo University of Science, Japan

• Homma Yoshikazu

  Department of physics, Tokyo University of Science, Japan

抄録

The cobalt (Co) catalyst behavior for SWNT growth on thermal oxidized silica and single-crystalline quartz by using alcohol chemical vapor deposition (CVD) was compared. The influence of the nature of substrate surface was analyzed from the size and density of both catalyst nanoparticles and SWNTs. The Co nanoparticles, on the quartz substrate after growth, had a mean diameter of about 5.9 nm which was larger than that (2.1 nm) on the silica substrate. Randomly dispersed SWNTs with a higher density were obtained on silica, while aligned SWNTs with a lower density were achieved on ST-cut quartz. The lower density of the nanoparticles on the quartz substrate can be attributed to a larger surface diffusion length of Co atoms in comparison with the silica surface. [DOI: 10.1380/ejssnt.2011.107]

収録刊行物

• e-Journal of Surface Science and Nanotechnology

  e-Journal of Surface Science and Nanotechnology 9 107-111, 2011

  公益社団法人 日本表面真空学会

キーワード

• Carbon nanotubes
• Co-catalyst
• Diffusion length
• Silica
• ST-cut quartz

詳細情報

• CRID: 1390282680164407424
• NII論文ID: 130004439266
• DOI: 10.1380/ejssnt.2011.107
• ISSN: 13480391
• Web Site: http://www.jstage.jst.go.jp/article/ejssnt/9/0/9_0_107/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可