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Gas sensing properties of flower-like ZnO prepared by a microwave-assisted technique

机译：微波辅助制备的花状ZnO的气敏特性

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摘要

Flower-like ZnO hierarchical architectures consisting of different building blocks have been successfully synthesized by a simple microwave-assisted decomposition route. The scanning electron microscopy and transmission electron microscopy results indicated that the morphologies of ZnO hierarchical architectures could be tailored by changing the category of the additives. Gas sensors based on the resulting products were fabricated and their gas sensing properties were tested for a variety of target gases. The results indicated that the sensor based on ZnO with a needle-assembled structure exhibited excellent selectivity and a higher response to NO2 at 75 degrees C compared to those using the other two flower-like ZnO. The good performance observed here was likely to be the result of the high donor-related intrinsic defects.
机译：通过简单的微波辅助分解途径已成功合成了由不同结构单元组成的花状ZnO分层体系。扫描电子显微镜和透射电子显微镜的结果表明，可以通过改变添加剂的种类来定制ZnO分层结构的形态。制造了基于所得产品的气体传感器，并对各种目标气体测试了它们的气体传感特性。结果表明，与使用其他两种花状ZnO的传感器相比，具有针头组装结构的ZnO传感器在75摄氏度时表现出优异的选择性和对NO2的更高响应。此处观察到的良好性能可能是与供体相关的内在缺陷较高的结果。

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