Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7146220 | Sensors and Actuators B: Chemical | 2015 | 31 Pages |
Abstract
CuO-NiO core-shell microspheres were prepared through a simple two-step hydrothermal method. The crystal structure, valence state and morphology of the CuO-NiO core-shell were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The surface characteristic of the microspheres was investigated by the nitrogen adsorption method. To demonstrate the use of CuO-NiO core-shell materials, a chemical gas sensor has been fabricated and investigated. The results revealed that core-shell microspheres sensor exhibited enhanced H2S sensing properties compared with bare CuO microspheres. The enhanced gas responses were discussed in relation to catalytic effect of NiO flower-like shell as well as formation of heterojunction.
Related Topics
Physical Sciences and Engineering
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Authors
Yongfan Wang, Fengdong Qu, Juan Liu, Ying Wang, Jingran Zhou, Shengping Ruan,