The ZnO@SnO2 core–shell nanorod arrays have been synthesized. As the cores, ZnO nanorod arrays were first prepared by aqueous chemical growth method. Then using a simple liquid-phase deposition method, SnO2 was deposited on the ZnO nanorod arrays. Scanning electron microscopy, transmission electron microscopy, and X-ray diffraction were used to characterize the morphologies and structures of the products. Photoluminescence properties were also investigated. It was found that the ZnO@SnO2 core–shell nanorod arrays showed enhanced UV and green emissions when compared with the bare ZnO nanorod arrays.

中文翻译：

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ZnO@SnO2核壳纳米棒阵列的合成和光致发光特性

已经合成了 ZnO@SnO2 核壳纳米棒阵列。作为核心，ZnO 纳米棒阵列首先通过水性化学生长法制备。然后使用简单的液相沉积方法，将 SnO2 沉积在 ZnO 纳米棒阵列上。采用扫描电镜、透射电镜和X射线衍射对产物的形貌和结构进行表征。还研究了光致发光特性。结果表明，与裸露的 ZnO 纳米棒阵列相比，ZnO@SnO2 核壳纳米棒阵列显示出增强的紫外线和绿色发射。