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Hydrothermal growth of ZnO nanoscrewdrivers and their gas sensing properties

机译：ZnO纳米螺丝刀的水热生长及其气敏特性

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摘要

Single crystalline ZnO nanoscrewdrivers have been prepared by hydrothermal growth on a modified ITO glass substrate. The as-prepared samples were characterized by x-ray diffraction ( XRD), field-emission scanning electron microscopy ( FE-SEM), transmission electron microscopy ( TEM) and selected area electron diffraction ( SAED). Gas sensors were fabricated using the as-prepared sample. Gas sensing measurements reveal that sensors based on ZnO nanoscrewdrivers show high sensitivity to dilute H2S gas. The detection limit of the sensors achieved several ppb. The response mechanism of the sensors to H2S is discussed according to the response transients of the gas sensors.
机译：通过在改性的ITO玻璃基板上进行水热生长，已经制备了单晶ZnO纳米螺丝刀。制备的样品通过X射线衍射（XRD），场发射扫描电子显微镜（FE-SEM），透射电子显微镜（TEM）和选择区域电子衍射（SAED）进行表征。使用准备好的样品制造气体传感器。气体传感测量表明，基于ZnO纳米螺丝刀的传感器对稀释H2S气体显示出很高的灵敏度。传感器的检测极限达到了几ppb。根据气体传感器的响应瞬变，讨论了传感器对H2S的响应机理。

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