A novel method for improving the performance of ZnO gas sensors
A novel method for improving the performance of ZnO gas sensors
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DOI：
10.1016/j.snb.2005.05.020
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发表时间：
2006-03-30
影响因子：
8.4
通讯作者：
Jiang, MH
中科院分区：
文献类型：
--
作者：
Xu, HY;Liu, XL;Jiang, MH
采用水热热压法制备了一种新型的氧化锌多孔纳米固体，测试结果表明其孔径非常均匀。与传统的氧化锌纳米颗粒(记为S-1)制作的传感器相比，基于氧化锌多孔纳米固体(记为S-2)的传感器对多种有机蒸气表现出更好的传感性能，S-2在空气中的本征电阻显著降低，选择性提高。S-2气敏传感器的最佳工作温度为370℃，而S-1气敏传感器的最适工作温度为420℃。(C)2005 Elsevier B.V.保留所有权利。
A novel ZnO porous nanosolid has been prepared by hydrothermal hot-press method, and the measurements indicated that it had very uniform pore size. Compared with the sensor fabricated from conventional ZnO nanoparticles (denoted as S-1), the sensor from ZnO porous nanosolid (denoted as S-2) showed much better sensing performance towards several organic vapors; the intrinsic resistance of S-2 in air dramatically decreased and its selectivity was improved. The optimum working temperature of S-2 was 370 degrees C, whereas that of S-1 was as high as 420 degrees C. The differences in gas sensing performance between the two kinds of sensors were analyzed based on the scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM) measurements. (c) 2005 Elsevier B.V. All rights reserved.