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- Title
Synthesis and gas sensing properties of palladium-doped indium oxide microstructures for enhanced hydrogen detection.
- Authors
Chen, Lin; He, Xiaoyan; Liang, Yanfei; Sun, Yongjiao; Zhao, Zhengting; Hu, Jie
- Abstract
In this paper, the pure InO and Pd-doped InO (0.5, 1.0, 2.0 and 4.0 mol%) flower-like spherical microstructures have been synthesized by a hydrothermal method. The crystal structure and surface morphology of as-prepared samples were characterized by X-ray diffraction and scanning electron microscopy. The gas sensing experiments were carried out on all the as-prepared gas sensors to hydrogen gas, and the measured results demonstrated that the Pd-doped InO gas sensors exhibit enhanced gas sensing performance under the optimal working temperature of 210 °C. Especially, the 1.0 mol% Pd-doped InO sensor shows the highest response to 100 ppm hydrogen gas at 210 °C, which was almost two times higher than that of pure one. Furthermore, the 1.0 mol% Pd-doped InO gas sensor also shows fast response/recovery time about 4 and 7 s, respectively. Finally, the gas sensing mechanism was also discussed on the pure and Pd-doped InO gas sensors.
- Subjects
INDIUM oxide; PALLADIUM; MICROSTRUCTURE; CHEMICAL synthesis; CRYSTAL structure; HYDROGEN
- Publication
Journal of Materials Science: Materials in Electronics, 2016, Vol 27, Issue 11, p11331
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-016-5257-z