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| Synthesis and Characterization of Silica Nanowires Catalysted by Tin |
| NI Zifeng LIU Liguo WANG Yongguang |
| School of Mechanical Engineering, Jiangnan University, Wuxi 214122 |
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Cite this article:
NI Zifeng LIU Liguo WANG Yongguang. Synthesis and Characterization of Silica Nanowires Catalysted by Tin. Chin J Mater Res, 2011, 25(2): 183-186.
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Abstract A novel micro–structure which consists of highly aligned and closely packed silica nanowires has been synthesized by using chemical vapor deposition (CVD) process. The tin droplets were supplied by carbothermal reduction of SnO2 powders as catalyst, and the source and substrate of the growth of silica nanowires was silicon wafers. This novel micro–structure was investigated by the scanning electron microscopy (SEM), energy–dispersive X–ray spectroscopy (EDX), transmission electron microscopy (TEM) and selected area electron diffraction (SAED) analyses. It was found that the diameters of the novel micro–structures and the amorphous silica nanowires are 5–15 μm and 100–200 nm with the same length of 50–100 μm, respectively. Finally, it is of interest to note that, each tin droplet can simultaneously catalyze the growth of several silica nanowires, which is quite different from the conventional vapor–liquid–solid process, and the silica nanowires tend to grow batch by batch. The PL spectra of the SiO2 nanowires showe a strong light at 395nm (3.14 eV) under excitation at 260 nm (4.77 eV).
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Received: 01 September 2010
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| Fund: Supported by the Fundamental Research Funds for the Central Universities No.JUSRP11115. |
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