کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1543707 | 1512869 | 2016 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation of SiC/SiO2 core–shell nanowires via molten salt mediated carbothermal reduction route Preparation of SiC/SiO2 core–shell nanowires via molten salt mediated carbothermal reduction route](/preview/png/1543707.png)
• SiC nanowires were prepared from low cost silica fume and sucrose.
• The morphology of nanowires is bamboo-like shape.
• The nanowires exhibit a significant blue shift.
The growth of silicon carbide (SiC) crystal generally requires a high temperature, especially when low quality industrial wastes are used as the starting raw materials. In this work, SiC/SiO2 core–shell nanowires (NWs) were synthesized from low cost silica fume and sucrose via a molten salt mediated carbothermal reduction (CR) route. The molten salt was found to be effective in promoting the SiC growth and lowering the synthesis temperature. The resultant NWs exhibited a heterostructure composed of a 3C–SiC core of 100 nm in diameter and a 5–10 nm thick amorphous SiO2 shell layer. The photoluminescence spectrum of the achieved SiC NWs displayed a significant blue shift (a dominant luminescence at round 422 nm), which suggested that they were high quality and could be a promising candidate material for future optoelectronic applications.
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 80, June 2016, Pages 19–24