Synthesis of One-Dimensional SiC Nanostructures from a Glassy Buckypaper

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• 作者：Mengning Ding ; Alexander Star
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2013
• 出版时间：March 27, 2013
• 年：2013
• 卷：5
• 期：6
• 页码：1928-1936
• 全文大小：712K
• 年卷期：v.5,no.6(March 27, 2013)
• ISSN：1944-8252

文摘

A simple and scalable synthetic strategy was developed for the fabrication of one-dimensional SiC nanostructures鈥攏anorods and nanowires. Thin sheets of single-walled carbon nanotubes (SWNTs) were prepared by vacuum filtration and were washed repeatedly with sodium silicate (Na₂SiO₃) solution. The resulting 鈥済lassy buckypaper鈥?was heated at 1300鈥?500 掳C under Ar/H₂ to allow a solid state reaction between C and Si precursors to form a variety of SiC nanostructures. The morphology and crystal structures of SiC nanorods and nanowires were characterized using scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), energy-dispersive X-ray spectroscopy (EDX), electron diffraction (ED), and X-ray diffraction (XRD) techniques. Furthermore, electrical conductance measurements were performed on SiC nanorods, demonstrating their potential applications in high-temperature sensors and control systems.

Keywords:

SiC nanorods; SiC nanowires; carbon nanotubes; silicate; high-temperature sensors