Magnesium catalyzed growth of SiO<sub>2</sub> hierarchical nanostructures by a thermal evaporation process
Liu, Zhihong; Yang, Qing; Zhang, Hui; Wang, Lei; Li, Dongsheng; Yang, Deren; Yang, Deren;; Liu, Zhihong; State Key Lab of Silicon Materials and Department of Materials and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China; Yang, Qing; State Key Lab of Silicon Materials and Department of Materials and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China; Zhang, Hui; State Key Lab of Silicon Materials and Department of Materials and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China; Wang, Lei; State Key Lab of Silicon Materials and Department of Materials and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China; Li, Dongsheng; State Key Lab of Silicon Materials and Department of Materials and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Журнал:
Nanotechnology
Дата:
2008-04-23
Аннотация:
SiO<sub>2</sub> hierarchical nanostructures consisting of a wire-like main stem and lots of rod-like sub-branches have been synthesized by a magnesium catalyzed thermal evaporation process. It is indicated that magnesium plays a critical role in the synthesis of SiO<sub>2</sub> hierarchical nanostructures including promotion for SiO evaporation and hierarchical-like growth of SiO<sub>2</sub>. Moreover, the photoluminescence (PL) analysis of the SiO<sub>2</sub> hierarchical nanostructures reveals that blue and ultraviolet (UV) emissions are detected, which are different from those of other SiO<sub>2</sub> nanostructures. Finally, the growth mechanism and PL emission of SiO<sub>2</sub> hierarchical nanostructures have been preliminarily discussed.
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