1. Synthesis of nanostructured copper oxide via oxalate precursors and their sensing properties for hydrogen cyanide gas.
- Author
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Yang, Mingqing, He, Junhui, Hu, Xiaochun, Yan, Chunxiao, and Cheng, Zhenxing
- Subjects
COPPER oxide ,NANOSTRUCTURED materials synthesis ,HYDROCYANIC acid ,X-ray diffraction ,SCANNING electron microscopy ,TRANSMISSION electron microscopy ,RESONATORS - Abstract
In this work, nanostructured copper oxide of varied morphologies and high surface area were prepared by calcination of copper oxalate precursors, and were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis and differential thermal analysis, and nitrogen adsorption–desorption measurements. The sphere-like CuO (specific surface area: 73 m
2 g−1 ) functionalized QCM resonators were fabricated and explored for HCN sensing. The sensitivity (10 s HCN exposure) of sphere-like CuO functionalized QCM resonators reached as high as 6.53 Hz μg−1 . The reproducibility and stability of sphere-like CuO functionalized QCM resonators was excellent, and the selectivity was very high with a converse response to examined common chemicals. The high surface area CuO functionalized QCM sensors may be applicable for HCN gas sensing. [ABSTRACT FROM AUTHOR]- Published
- 2013
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