Growth of SiC nanowhiskers from wooden precursors, separation, and characterization
Growth of SiC nanowhiskers from wooden precursors, separation, and characterization
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DOI：
10.1016/j.ceramint.2011.06.001
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发表时间：
2011-12
影响因子：
5.2
通讯作者：
R. Dhiman;E. Johnson;P. Morgen
中科院分区：
文献类型：
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作者：
R. Dhiman;E. Johnson;P. Morgen
我们已经实现了一种无催化剂、低成本、易于合成的直且均匀、高纵横比的β-SiC纳米晶须（直径为25-100nm），以及一种适合大量生产单个晶须的分离技术。我们得出结论，这些纳米晶须通过连续的气-气-表面反应在最初形成的SiC簇上成核。从木粉（锯末）中获得的碳和正硅酸四乙酯（TEOS）中的sio2之间的接触反应最初形成了SiC簇。
We have achieved a catalyst free, low cost, easy synthesis of straight and uniform, high-aspect ratio β-SiC nanowhiskers (of 25–100nm diameters), and a suitable separation technique to produce large quantities of individual whiskers. We conclude that these nanowhiskers nucleate on initially formed SiC clusters by a sequential gas–gas-surface reaction. The SiC clusters are formed initially as the primary product of the contact reaction between carbon obtained from wood powder (saw dust) and SiO2from tetraethyl orthosilicate (TEOS).