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Synthesis of Kelp-Like Crystalline β-SiC Nanobelts and their Apical Growth Mechanism

Authors


  • L. An—contributing editor

  • Supported by the “973” National Key Basic Research (Grant No. 2005CB623601).

†Author to whom correspondence should be addressed. e-mail: ytqian@ustc.edu.cn

Abstract

Novel kelp-like crystalline β-SiC nanobelts have been synthesized through direct pyrolysis of methyltrichlorosilane at 600°C in an autoclave. The products are characterized by X-ray powder diffraction, field emission scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, electron diffraction, and Raman spectroscopy. On the basis of morphology and structural characterization, an apical growth mechanism is proposed to clarify the formation of as-prepared nanobelts. Also, at 420 nm, a broad peak is observed in the visible photoluminescence emission.

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