Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 111, Issue 31, Pages 11604-11611Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp073051s
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High-density, ultralong SiO2 nanotubes were successfully synthesized by a one-step thermal evaporation process using CdSe nanocrystals as the seeds. The as-synthesized products were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectrometry, and cathodoluminescence. Varying experimental parameters results in the formation of additional SiO2-based nanostructures, such as flowerlike SiO2 nanotubes and ZnS/SiO2 core-shell structures. On the basis of these observations, a template-based growth mechanism was proposed for the growth of these nanostructures. Furthermore, the stable and strong visible-light emission properties are of significant interest for their potential applications in future integrated devices.
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