Catalyst synthesis of silicon-based Zn2SiO4-SiO x heterostructure nanowires

H. Q. Wang, G. Z. Wang, L. C. Jia, C. J. Tang, G. H. Li

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12 引用 (Scopus)

摘要

In this paper, a simple catalyst synthesis strategy for the preparation of Si-based heterostructure nanowires has been reported. The heterostructure nanowires with 800 nm in length and 20- nm in diameter are composed of Zn2SiO4 and SiOx nanowires in which die upper part is Zn2SiO4 nanowires and the lower part rooted to the Si substrate is SiOx nanowires. Zn droplets catalyze the growth of SiOx nanowires first, followed by each SiOx nanowire splitting to several sub-branches of SiOx nanowires, and Zn2SiO4 nanowires are formed at the end of the growth. It was found that the Si-based heterostructure nanowires form only at the relative low temperature. A dichromatic emission resulted respectively from SiO x and Zn2SiO4further proves the heterostructure. A possible growth mechanism was proposed to better understand the formation of the silicon-based heterostructure.

源语言英语
页(从-至)14307-14311
页数5
期刊Journal of Physical Chemistry C
111
39
DOI
出版状态已出版 - 4 10月 2007
已对外发布

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