Structural characterization of the C60 nanowhiskers heat-treated at high temperatures for potential superconductor application

K. Miyazawa; C. Hirata; R. Kano; T. Wakahara; H. Takeya; T. Yamaguchi; Y. Takano; J. Tang; Y. Lin; M. Tachibana

doi:10.14723/tmrsj.38.517

Regular Papers

Structural characterization of the C₆₀ nanowhiskers heat-treated at high temperatures for potential superconductor application

K. Miyazawa, C. Hirata, R. Kano, T. Wakahara, H. Takeya, T. Yamaguchi, Y. Takano, J. Tang, Y. Lin, M. Tachibana

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Keywords: C₆₀ nanowhiskers, liquid-liquid interfacial precipitation method, LLIP method, fullerene, superconductor, carbon nanofiber

JOURNAL FREE ACCESS

2013 Volume 38 Issue 4 Pages 517-520

DOI https://doi.org/10.14723/tmrsj.38.517

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Abstract

Structure of the C₆₀ nanowhiskers (C₆₀NWs) heat-treated at high temperatures was investigated by high-resolution transmission electron microscopy (HRTEM), electron energy loss spectroscopy (EELS), Raman spectrometry, thermogravimetric analysis, Brunauer-Emmett-Teller (BET) method, and so forth. Although the C₆₀NWs heated at 800 °C in vacuum showed a remaining of C₆₀ molecules, the C₆₀NWs became amorphous by heating at 900 °C in vacuum, exhibiting the highest specific surface area of 195.2 m²g^-1.The porous nanofibers synthesized by heating C₆₀NWsat high temperatures are new candidates of superconductive graphitic carbon.

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