期刊
CERAMICS INTERNATIONAL
卷 41, 期 1, 页码 1749-1756出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2014.09.120
关键词
Sensors; CuO/ZnO; Hybrid nanostructures; Semiconductors; Photocatalysis
资金
- NSFC [21163020, 21266031]
- Excellent Talents in Xinjiang Province [2013721015]
- Excellent Doctor Innovation Program of Xinjiang University [XJUBSCX-2012005]
Novel CuO/ZnO hybrid nanostructures have been prepared by the complex-directed hybridization and subsequent calcination. In the hybridization process, Zn(OH)(4)(2-) ions in the NaOH solution not only served as the ZnO precursor, but also directed the precipitation of CuO. The synthesized CuO/ZnO nanostructures were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transition electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, and diffuse reflectance UV-vis spectroscopy (UV-DRS). XRD results confirmed the presence of CuO and ZnO phases in the hybrid nanostructures. Morphological analysis showed that flower-like and core-shell CuO/ZnO nanostructures and CuO/ZnO nanoparticles were selectively prepared by adjusting the precipitation temperature. Spectral analysis showed that the hybrids displayed a strong absorption in the visible light range of 400-800 nm. Subsequently, gas sensing measurements revealed that the synthesized CuO/ZnO hybrids exhibited a p-type sensing behavior in response to reducing gases, such as acetone, ethanol, and xylene. In addition, the photo-degradation of Rhodamine B (RhB) by the hybrids was evaluated. The proposed strategy opens a new route to metal oxide-based hybrid nanostructures for applications in catalysis, gas sensor, and photocatalysis. (C) 2014 Published by Elsevier Ltd and Techna Group S.r.l.
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