Influence of the exposed 0001 and 101-0 crystal facets on acetone sensing performances of ZnO
Influence of the exposed 0001 and 101-0 crystal facets on acetone sensing performances of ZnO
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暴露的0001和101-0晶面对ZnO丙酮传感性能的影响
DOI：
10.1016/j.matlet.2020.127931
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发表时间：
2020-08
影响因子：
3
通讯作者：
Hui Ren
中科院分区：
文献类型：
--
作者：
Xiupeng Liu;Tong Zhang;Fan Li;Hongran Zhao;Hui Ren
在过去的几十年里，各种形态金属氧化物的气敏特性得到了广泛的研究。在目前的研究中，许多证据表明，传感材料的形貌和比表面积并不是决定其传感性能的根本因素。本文采用水热法制备了高暴露比例为0001和10个1-0晶面的ZnO六方片和ZnO六方棱镜。详细研究了暴露晶面对ZnO气敏性能的影响。采用扫描电镜（SEM）、透射电镜（TEM）和x射线衍射（XRD）对材料的形貌和晶体结构进行了表征。研究了复合材料的气敏性能。结果表明，高暴露0001晶面比例的ZnO具有更好的气敏性能。分析计算结果表明，{0001}晶面的悬垂键密度比{10 1-0}晶面高近2倍，为气体吸附和解吸提供了更多的活性位点。结果表明，研究金属氧化物暴露晶面与气敏性能之间的关系对气体传感器的制造具有重要意义。
Gas-sensing properties of metal oxides in various morphologies has been widely investigated in the past decades. Among the present research, many evidences demonstrate that the morphologies and specific surface area of sensing materials are not the fundamental factors which determine their sensing performance. In this work, ZnO hexagonal plates and ZnO hexagonal prisms which expose high proportion 0001 and 10 1-0 crystal facets, respectively, were prepared by hydrothermal method. The effect of exposed crystal facets on the gas-sensing performance of ZnO was studied in detail. The morphology and crystal structure of the materials were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The gas sensing performance of the composites were also investigated. Results showed that the ZnO with high proportion of exposed 0001 crystal facets exhibited better gas-sensing performance. The analysis and calculation of the two types crystal facets showed that the dangling bonds density of {0001} facets is nearly twice higher than that of {10 1-0} facets, which provides more active sites for gas adsorption and desorption. The results demonstrate that the research on the relationship between exposed crystal facets and gas-sensing performance of metal oxides are of great significance for manufacture of gas sensors.
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影响因子：
5.2
作者：
S. K. Sinha
通讯作者：
S. K. Sinha
影响因子：
3.1
作者：
Liu, Jun;Chen, Xiaolong;Guo, Zaiping
通讯作者：
Guo, Zaiping
影响因子：
1.5
作者：
S. Fujitsu;K. Koumoto;H. Yanagida;Yuichi Watanabe;H. Kawazoe
通讯作者：
S. Fujitsu;K. Koumoto;H. Yanagida;Yuichi Watanabe;H. Kawazoe
使用分层 ZnO 气体传感器快速选择性检测丙酮，用于危险气味标记应用
影响因子：
13.6
作者：
Jia, Qianqian;Ji, Huiming;Jin, Zhengguo
通讯作者：
Jin, Zhengguo
DOI：
10.1016/0584-8539(94)01216-4
发表时间：
1995-05-01
影响因子：
4.4
作者：
LENAERTS, S;ROGGEN, J;MAES, G
通讯作者：
MAES, G