Enhanced ultrasensitive detection of ozone gas using reduced graphene oxide-incorporated LaFeO3 nanospheres for environmental remediation process

An efficient and facile benign approach to develop reduced graphene oxide (rGO) incorporated into perovskite LaFeO 3 nanostructure with excellent surface area to detect ultrasensitive Ozone (O 3 ) gas for environmental remediation has been demonstrated. The prepared rGO/LaFeO 3 nanocomposites have d...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2020-06, Vol.31 (11), p.8933-8945
Main Authors: Thirumalairajan, S., Girija, K., Mastelaro, Valmor R., Subramanian, K. S.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemical composition
Chemistry and Materials Science
Environmental restoration
Ferrites
Gas sensors
Graphene
Lanthanum compounds
Materials Science
Nanocomposites
Nanospheres
Nanostructure
Optical and Electronic Materials
Ozone
Perovskites
Recovery time
Remediation
Selectivity
X ray photoelectron spectroscopy
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Summary:An efficient and facile benign approach to develop reduced graphene oxide (rGO) incorporated into perovskite LaFeO 3 nanostructure with excellent surface area to detect ultrasensitive Ozone (O 3 ) gas for environmental remediation has been demonstrated. The prepared rGO/LaFeO 3 nanocomposites have diameter in the range ~ 1 μm constituting nanospheres with average size ~ 50 nm. Phase purity and chemical composition of rGO/LaFeO 3 nanocomposites were revealed through XRD and XPS analysis. The ozone gas sensing performance of rGO/LaFeO 3 nanocomposites was investigated and found to exhibit excellent sensitivity, high selectivity, good response (20 and 31 s) and recovery time (39 and 31 s) for 80 ppb at 100 °C when compared to pure LaFeO 3 nanostructures. These results indicate that the composites of rGO not only enhanced the ozone gas sensing response at low ppb concentration, but also a decrease in the working temperature. From these perspectives, rGO/LaFeO 3 nanocomposites based ozone gas sensor can be regarded as a promising candidate for environmental remediation process in near future.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-03428-1