NO2 gas sensing properties of heterostructural CuO nanoparticles/ZnO nanorods

Monitoring of harmful nitrogen dioxide (NO 2 ) gases is very important for industrial fields and to maintain a clean environment. In this regard, it is essential to develop low-temperature operating NO 2 gas detecting devices. In recent years, semiconducting oxide-based heterostructured nanomaterial...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2021-07, Vol.32 (13), p.18178-18191
Main Authors: Navale, Y. H., Navale, S. T., Chougule, M. A., Ramgir, N. S., Patil, V. B.
Format: Article
Language:English
Subjects:
Argon
Characterization and Evaluation of Materials
Chemistry and Materials Science
Contact angle
Copper oxides
Gas sensors
Gases
Heterostructures
Low temperature
Materials Science
Morphology
Nanomaterials
Nanoparticles
Nanorods
Nitrogen dioxide
Optical and Electronic Materials
X ray photoelectron spectroscopy
Zinc oxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Monitoring of harmful nitrogen dioxide (NO 2 ) gases is very important for industrial fields and to maintain a clean environment. In this regard, it is essential to develop low-temperature operating NO 2 gas detecting devices. In recent years, semiconducting oxide-based heterostructured nanomaterials have received considerable attention in the detection of different types of gases at optimal working temperatures. In this context, the selective NO 2 gas sensing properties of CuO-nanoparticles/ZnO-nanorods based heterostructures are described in this article. The sensing films of CuO/ZnO heterostructures are fabricated using catalyst free thermal evaporation route followed by annealing in air and argon gas, respectively. Information regarding the structure, morphology, and composition of the heterostructured films was analyzed using XRD, Raman, EDS, SEM, TEM, XPS and contact angle techniques, prior to sensing measurements. Gas sensing studies have demonstrated that the thermally evaporated CuO/ZnO heterostructured sensor films detect NO 2 selectively at a lower working temperature of 150 °C. The heterostructured CuO/ZnO sensor showed a maximum response of 96% at 100 ppm NO 2 with good stability, reproducibility, and reversibility in gas response. The main objective of this study is the interaction of NO 2 gas with heterostructured CuO/ZnO sensing materials, which can be helpful in the detection of toxic gases.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-021-06360-0