引用本文:
Chao Li, Zhi Shuo Yu, Shao Ming Fang, Huan Xin Wang, Yang Hai Gui, Jia Qiang Xu, Rong Feng Chen. Fabrication and gas sensing property of honeycomb-like ZnO[J]. Chinese Chemical Letters,
2008, 19(5): 599-603.
doi:
10.1016/j.cclet.2008.03.032
Citation: Chao Li, Zhi Shuo Yu, Shao Ming Fang, Huan Xin Wang, Yang Hai Gui, Jia Qiang Xu, Rong Feng Chen. Fabrication and gas sensing property of honeycomb-like ZnO[J]. Chinese Chemical Letters, 2008, 19(5): 599-603. doi: 10.1016/j.cclet.2008.03.032
Citation: Chao Li, Zhi Shuo Yu, Shao Ming Fang, Huan Xin Wang, Yang Hai Gui, Jia Qiang Xu, Rong Feng Chen. Fabrication and gas sensing property of honeycomb-like ZnO[J]. Chinese Chemical Letters, 2008, 19(5): 599-603. doi: 10.1016/j.cclet.2008.03.032
Fabrication and gas sensing property of honeycomb-like ZnO
摘要:
We report the structural characterization and proposed formation mechanism of honeycomb-like ZnO conglomerationsfabricated by direct precipitation method. X-ray diffraction (XRD), energy-disperse X-ray spectrometry (EDS), scanning electronmicroscopy (SEM) showed that the as-prepared ZnO calcined at 700℃ were micron sphere particles with honeycomb-likestructure. In the UV-vis absorbing spectrum, it was observed that there is a new additional absorption band at 260 nm, and it wasspeculated that the absorption may be caused by defects on the surface and interface of honeycomb-like ZnO. The as-productsshowed high sensitivity and short response time to sulfured hydrogen gas. These results demonstrate that honeycomb-like ZnOconglomerations are very promising materials for fabricating H2S gas sensors.
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关键词:
- ZnO
- / Precipitation
- / Honeycomb-like
- / Gas sensing property
English
Fabrication and gas sensing property of honeycomb-like ZnO
Abstract:
We report the structural characterization and proposed formation mechanism of honeycomb-like ZnO conglomerationsfabricated by direct precipitation method. X-ray diffraction (XRD), energy-disperse X-ray spectrometry (EDS), scanning electronmicroscopy (SEM) showed that the as-prepared ZnO calcined at 700℃ were micron sphere particles with honeycomb-likestructure. In the UV-vis absorbing spectrum, it was observed that there is a new additional absorption band at 260 nm, and it wasspeculated that the absorption may be caused by defects on the surface and interface of honeycomb-like ZnO. The as-productsshowed high sensitivity and short response time to sulfured hydrogen gas. These results demonstrate that honeycomb-like ZnOconglomerations are very promising materials for fabricating H2S gas sensors.
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Key words:
- ZnO
- / Precipitation
- / Honeycomb-like
- / Gas sensing property
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