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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Synthesis and Cathodoluminescence of Morphology-Tunable SiO2 Nanotubes and ZnS/SiO2 Core-Shell Structures Using CdSe Nanocrystals as the Seeds
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Synthesis and Cathodoluminescence of Morphology-Tunable SiO2 Nanotubes and ZnS/SiO2 Core-Shell Structures Using CdSe Nanocrystals as the Seeds

机译：以CdSe纳米晶为种子的形态可调的SiO2纳米管和ZnS / SiO2核-壳结构的合成和阴极发光

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摘要

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.
机译：以CdSe纳米晶体为种子，通过一步热蒸发工艺成功合成了高密度超长SiO2纳米管。使用X射线衍射，扫描电子显微镜，透射电子显微镜，能量色散X射线光谱法和阴极发光对合成后的产物进行表征。不同的实验参数导致形成另外的基于SiO2的纳米结构，例如花状SiO2纳米管和ZnS / SiO2核-壳结构。基于这些观察，提出了基于模板的生长机制用于这些纳米结构的生长。此外，稳定和强大的可见光发射特性对其在未来集成设备中的潜在应用非常感兴趣。

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