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SiC nanowires grown on activated carbon in a polymer pyrolysis route

机译：SiC纳米线在聚合物热解路径上的活性炭上生长

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摘要

β-SiC nanowires are a novel type of photocatalysts. However, they tend to be entangled together especially at high concentrations when dispersed in water, which may reduce the photocatalytic activity. It is reasonable to expect that β-SiC nanowires would provide better photocatalytic activity if they are grown on activated carbon. In the letter we report the successful synthesis of quantities of β-SiC nanowires grown on the surfaces of the activated carbon by pyrolysis of polycarbosilane at 1300℃. The nanowires, with the diameters of 50-100 nm and the length of tens of micrometers, are composed of single crystal β-SiC along the (111) direction. Both the VLS and the VS mechanisms were employed to interpret the nanowires growth.
机译：β-SiC纳米线是一种新型的光催化剂。然而，当它们分散在水中时，它们往往缠结在一起，尤其是在高浓度下，这可能降低光催化活性。可以合理预期，如果在活性炭上生长，β-SiC纳米线将提供更好的光催化活性。在这封信中，我们报道了通过在1300℃下热解聚碳硅烷成功合成了在活性炭表面上生长的大量β-SiC纳米线的过程。纳米线的直径为50-100 nm，长度为数十微米，由沿（111）方向的单晶β-SiC组成。 VLS和VS机制均用于解释纳米线的生长。

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  • 来源
    《Materials Science and Engineering》 |2010年第1期|108-112|共5页
  • 作者

    Gong-yi Li; Xiao-dong Li; Hao Wang; Xin Xing; Yong Yang;

  • 作者单位

    State Key Laboratory of Advanced Ceramic Fibers & Composites, College of Aerospace & Materials Engineering, National University of Defense Technology, No. 109 Deya Road. Shangdalong Street, Kaifu District, Changsha 410073. China;

    State Key Laboratory of Advanced Ceramic Fibers & Composites, College of Aerospace & Materials Engineering, National University of Defense Technology, No. 109 Deya Road. Shangdalong Street, Kaifu District, Changsha 410073. China;

    State Key Laboratory of Advanced Ceramic Fibers & Composites, College of Aerospace & Materials Engineering, National University of Defense Technology, No. 109 Deya Road. Shangdalong Street, Kaifu District, Changsha 410073. China;

    State Key Laboratory of Advanced Ceramic Fibers & Composites, College of Aerospace & Materials Engineering, National University of Defense Technology, No. 109 Deya Road. Shangdalong Street, Kaifu District, Changsha 410073. China;

    State Key Laboratory of Advanced Ceramic Fibers & Composites, College of Aerospace & Materials Engineering, National University of Defense Technology, No. 109 Deya Road. Shangdalong Street, Kaifu District, Changsha 410073. China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    nanomaterials; crystal growth; SiC nanowires; polycarbosilane; activated carbon;

    机译：纳米材料晶体生长SiC纳米线;聚碳硅烷活性炭;

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