Hidden caves in an aggregate of single-wall carbon nanohorns found by using gd2o3 probes

Ryota Yuge, Toshinari Ichihashi, Jin Miyawaki, Tsutomu Yoshitake, Sumio Iijima, Masako Yudasaka

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We investigated the inner structure of an aggregate made of single-wall carbon nanohorns (SWNHs). This structure has not been clarified because the thousands of SWNHs are densely packed and difficult to observe directly by electron microscopy. We used Gd2O3 as a probe for the electron microscope observation: Gd2O3 was confined inside SWNH via the incorporation of Gd acetate inside SWNHs with holes opened (NHox), followed by heat treatment at 1200 °C in Ar gas. From microscopic study, we found that Gd2O3 formed clumped crystals with sizes of 7-21 nm around the center of the SWNH aggregates, suggesting that there were 10-20-nm caves near the aggregate's center.

Original languageEnglish
Pages (from-to)2741-2744
Number of pages4
JournalJournal of Physical Chemistry C
Volume113
Issue number7
DOIs
Publication statusPublished - Feb 19 2009

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Nanohorns
caves
Caves
Carbon
probes
carbon
Electron microscopy
acetates
electron microscopy
Acetates
heat treatment
Electron microscopes
electron microscopes
Gases
Heat treatment
Crystals
gases
crystals

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Hidden caves in an aggregate of single-wall carbon nanohorns found by using gd2o3 probes. / Yuge, Ryota; Ichihashi, Toshinari; Miyawaki, Jin; Yoshitake, Tsutomu; Iijima, Sumio; Yudasaka, Masako.

In: Journal of Physical Chemistry C, Vol. 113, No. 7, 19.02.2009, p. 2741-2744.

Research output: Contribution to journalArticle

Yuge, Ryota ; Ichihashi, Toshinari ; Miyawaki, Jin ; Yoshitake, Tsutomu ; Iijima, Sumio ; Yudasaka, Masako. / Hidden caves in an aggregate of single-wall carbon nanohorns found by using gd2o3 probes. In: Journal of Physical Chemistry C. 2009 ; Vol. 113, No. 7. pp. 2741-2744.
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