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

doi:10.1021/jp810121a

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

Department of Advanced Device Materials

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	2741-2744
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	7
DOIs	https://doi.org/10.1021/jp810121a
Publication status	Published - Feb 19 2009

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1021/jp810121a

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

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.",

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AU - Iijima, Sumio

AU - Yudasaka, Masako

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