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Pristine and palladium-doped perovskite bismuth ferrites and their nitrogen dioxide gas sensor studies.

Authors :
Waghmare, Shivaji D.
Raut, Siddheshwar D.
Ghule, Balaji G.
Jadhav, Vijaykumar V.
Shaikh, Shoyebmohamad F.
Al-Enizi, Abdullah M.
Ubaidullah, Mohd
Nafady, Ayman
Thamer, Badr M.
Mane, Rajaram S.
Source :
Journal of King Saud University - Science; Oct2020, Vol. 32 Issue 7, p3125-3130, 6p
Publication Year :
2020

Abstract

Undoped and palladium-doped perovskite bismuth ferrite nitrogen dioxide (NO 2) gas sensors (BiFeO 3 i.e. BFO and Pd-BiFeO 3 i.e. Pd-BFO) are successfully synthesized via an easy and low-cost sol–gel process. The Pd-doping in BFO is confirmed through an X-ray diffraction data, field emission scanning electron microscopy images, energy-dispersive X-ray spectroscopy analysis, and its influence on the structure, morphology, surface area, and the NO 2 gas sensor performance of the BFO sensor has been examined and explored. Moreover, the plausible gas sensing response mechanism of Pd-BFO film sensor has also been proposed. The nanocubes embedded into a uniformly distributed upright standing nanoplates facilitate better gas adsorption and diffusion behavior on providing an excellent NO 2 -sensing performance with good sensitivity, excellent selectivity, better response (90 s)/recovery (110 s), and noticeable repeatability under a fixed 100 ppm NO 2 gas concentration level at an optimized low operating temperature i.e. 150 °C. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10183647
Volume :
32
Issue :
7
Database :
Supplemental Index
Journal :
Journal of King Saud University - Science
Publication Type :
Academic Journal
Accession number :
146146796
Full Text :
https://doi.org/10.1016/j.jksus.2020.08.024