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 shu

Fabrication and gas sensing property of honeycomb-like ZnO

a Henan Province Key Laboratory of Surface & Interface Science, Zhengzhou University of Light Industry,Zhengzhou 450002, China;
b Henan Academy of Science, Zhengzhou 450002, China

Received Date: 20 December 2007

Fund Project: The financial support from the National Natural Science Foundation of China (No.20771095) and He’nan Outstanding Youth Science Fund (No.0612002700) is gratefully acknowledged.

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.
- ZnO,
- Precipitation,
- Honeycomb-like,
- Gas sensing property
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