Micro-spherical ZnSnO3 material prepared by microwave-assisted method and its ethanol sensing properties
Micro-spherical ZnSnO3 material prepared by microwave-assisted method and its ethanol sensing properties
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微波辅助法制备微球形ZnSnO3材料及其乙醇传感性能
DOI：
10.1016/j.cclet.2020.01.004
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发表时间：
2020-01
影响因子：
9.1
通讯作者：
Xu Jiaqiang
中科院分区：
文献类型：
--
作者：
Zhang Dan;Zhang Yuqin;Fan Yu;Luo Na;Cheng Zhixuan;Xu Jiaqiang
采用微波辅助煅烧法制备了单分散的ZnSnO3微球。粉末X射线衍射（PXRD）结果表明，在高温处理下，产物的结构从晶态转变为非晶态。场发射扫描电子显微镜（FESEM）和透射电子显微镜（TEM）的观察表明，所得产物由表面粗糙的均匀微球组成，平均粒径约为700 nm。此外，通过调节Zn2+和Sn4+的比例可以很好地控制ZnSnO3微球的形貌。研究了不同Zn2 +/Sn4+比的ZnSnO3微球的气敏性能。结果表明，ZnSnO3微球在230 ° C的最佳工作温度下对乙醇具有良好的选择性和高灵敏度。当传感器暴露于50 ppm乙醇时，响应值为47，响应/恢复时间分别为11 s和12 s。
Monodispersed ZnSnO3microspheres are successfully preparedviaa facile microwave-assisted method together with subsequently calcination treatment. Powder X-ray diffraction (PXRD) results indicate that the structure of the products shifted from crystalline to amorphous under high-temperature treatments. Field emission scanning electron microscope (FESEM) and the transmission electron microscope (TEM) observations demonstrate that the as-obtained products are composed of uniform microspheres with rough surfaces and the mean diameter is measured as ∼700 nm. Moreover, the morphology of ZnSnO3microspheres can be well controlled by adjusting the ratio of Zn2+and Sn4+. The gas sensing properties of ZnSnO3microspheres with different ratios of Zn2+/Sn4+are investigated. Our results indicate that the ZnSnO3microspheres exhibit good selectivity and high sensitivity towards ethanol at the optimum working temperature of 230 °C. When the sensor is exposed 50 ppm ethanol, the value of response is 47 and the response/recovery times are 11 s and 12 s, respectively.
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影响因子：
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