Navale, Y. H. and Navale, S. T. and Galluzzi, M. and Stadler, F. J. and Debnath, A. K. and Ramgir, N. S. and Gadkari, S. C. and Gupta, S. K. and Aswal, D. K. and Patil, V. B. (2017) Rapid synthesis strategy of CuO nanocubes for sensitive and selective detection of NO2. Journal of Alloys and Compounds, 708. 456-463. ISSN 0925-8388

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Abstract

In present work, copper oxide (CuO) films have been successfully synthesized onto a quartz substrate using a simple and catalyst-free thermal evaporation technique and their chemiresistive properties were carried out towards host of target gases. Structural analysis demonstrates the formation of polycrystalline single phase monoclinic CuO. Formation of nanocubese-type of surface morphology of CuO was observed from morphological investigation. Gas sensing results demonstrate that the CuO films, composed of nanocubes (NCs), are highly selective towards oxidizing nitrogen dioxide (NO2) gas than other target gases along with rapid response and recovery times. CuO sensor films exhibit the maximum response value of 76%-100 ppm NO2 @ 150 degrees C. In addition, CuO films are able to sense as low as 1 ppm concentration of NO2 gas. The effect of operating temperature on the NO2 sensing properties of CuO films was thoroughly investigated and reported. Impedance spectroscopy was used to study the interaction mechanism between CuO sensor film and NO2 gas molecules.

Item Type:	Article
Additional Information:	copyright for this article belongs to M\S Elsevier.
Subjects:	Chemistry > Physical Chemistry Multidisciplinary Materials Science Metallurgy & Metallurgical Engineering Physics
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	20 Feb 2019 05:48
Last Modified:	20 Feb 2019 05:48
URI:	http://npl.csircentral.net/id/eprint/2833

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