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Needle-like Zn-doped SnO _2 nanorods with enhanced photocatalytic and gas sensing properties

机译：具有增强的光催化和气敏特性的针状Zn掺杂SnO _2纳米棒

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Zn-doped SnO _2 nanorods have been prepared by a simple hydrothermal method on a large scale. The as-prepared samples were characterized by x-ray powder diffraction, scanning electron microscope, transmission electron microscope, energy dispersive spectrometer, x-ray photoelectron spectroscopy, UVvis absorption spectra and photoluminescence spectra. Studies found that the products are needle-like single-crystalline nanorods grown along the [112?] orientation. The photocatalytic properties of the synthesized Zn-doped SnO _2 were investigated by decomposing acid fuchsine, showing much higher photocatalytic activity than pure SnO _2 nanorods and bulk SnO _2 powders. An enhanced gas sensing ability toward methanal, ethanol and acetone gases is also achieved in high sensitivity and fast response. The origins of the enhanced performances are discussed.
机译：Zn掺杂的SnO _2纳米棒已通过简单的水热法大规模制备。通过X射线粉末衍射，扫描电子显微镜，透射电子显微镜，能量分散光谱仪，X射线光电子能谱，UVvis吸收光谱和光致发光光谱来表征所制备的样品。研究发现，产品是沿[112？]方向生长的针状单晶纳米棒。通过分解酸性品红研究了合成的Zn掺杂SnO _2的光催化性能，显示出比纯SnO _2纳米棒和块状SnO _2高得多的光催化活性。还以高灵敏度和快速响应实现了对甲烷，乙醇和丙酮气体的增强的气体感应能力。讨论了增强性能的起源。

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