MSA  Vol.2 No.7 , July 2011
Si-N-C Nanowires Derived by Polyhydridomethylsilazane Pyrolysis
Author(s) Gong Jin Qi
ABSTRACT
The preceramic polymer, polyhydridomethylsilazane, was synthesized and pyrolyzed at 1873 K in nitrogen atmosphere to prepare Si-N-C nanowires without using any catalysts. The diameters of the nanowires were from tens of nanometers to several microns, and the maximum length of the nanowires reached several hundred microns. The nanowires had no bulbs or droplets on the tips. However, two different bulbs with diameters of several microns were observed, and one bulb was covered by nanowires all around, while the other bulb had nanowires just covered on its handle.

Cite this paper
nullG. Qi, "Si-N-C Nanowires Derived by Polyhydridomethylsilazane Pyrolysis," Materials Sciences and Applications, Vol. 2 No. 7, 2011, pp. 936-939. doi: 10.4236/msa.2011.27124.
References
[1]   X. C. Wu, W. H. Song, B. Zhao, et al., “Synthesis of Coaxial Nanowires of Silicon Nitride Sheathed with Silicon and Silicon Oxide,” Solid State Communications, Vol. 115, No. 12, 2000, pp. 683-686. doi:10.1016/S0038-1098(00)00255-6

[2]   C. Rath, A. Pinyol, J. Farjas, et al., “Si-N Nanowire Formation from Silicon Nano and Microparticles,” Materials Research Society Symposium—Proceedings, Vol. 789, 2004, pp. 1-4.

[3]   H. Cui and B. R. Stoner, “Nucleation and Growth of Silicon Nitride Nanoneedles Using Microwave Plasma Heating,” Journal of Material Research, Vol. 16, No. 11, 2001, pp. 3111-3115. doi:10.1557/JMR.2001.0429

[4]   Y. Zhang, N. Wang, R. He, et al., “A Simple Method to Synthesize Si3N4 and SiO2 Nanowires from Si or Si/SiO2 Mixture,” Journal of Crystal Growth, Vol. 233, No. 4, 2001, pp. 803-808. doi:10.1016/S0022-0248(01)01650-5

[5]   H. Y. Kim, J. Park and H. Yang, “Synthesis of Silicon Nitride Nanowires Directly from the Silicon Substrates,” Chemical Physics Letters, Vol. 372, No. 1-2, 2003, pp. 269-274. doi:10.1016/S0009-2614(03)00428-7

[6]   C. Xu, M. Kim, J. Chun, et al., “Gallium-Doped Silicon Nitride Nanowires Sheathed with Amorphous Silicon Oxynitride,” Scripta Materialia, Vol. 53, No. 8, 2005, pp. 949-954. doi:10.1016/j.scriptamat.2005.06.024

[7]   H. Chen, Y. Cao, X. Xiang, et al., “Fabrication of β-Si3N4 Nano-Fibers,” Journal of Alloys and Compounds, Vol. 325, No. 1-2, 2001, pp. L1-L3. doi:10.1016/S0925-8388(01)01383-4

[8]   W. Yang, Z. Xie, J. Li, et al., “Ultra-Long Single-Crys- talline α-Si3N4 Nanowires: Derived from a Polymeric Precursor,” Journal of the American Ceramic Society, Vol. 88, No. 6, 2005, pp. 1647-1650. doi:10.1111/j.1551-2916.2005.00270.x

[9]   G. J. Qi, C. R. Zhang and H. F. Hu, “Synthesis of Silicon Nitride Nanowires by the Pyrolysis of Perhydropolysi- lazane,” Journal of Nanoscience and Nanotechnology, Vol. 6, No. 5, 2006, pp. 1486-1488. doi:10.1166/jnn.2006.306

[10]   D. Seyferth and G. H.Wiseman, “High-Yield Synthesis of Si3N4/SiC Ceramic Materials by Pyrolysis of a Novel Polyorganosilazane,” Communications of the American Society, Vol. 7, 1984, pp. C132-133.

 
 
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