Pristine and palladium-doped perovskite bismuth ferrites and their nitrogen dioxide gas sensor studies
| Autor: | Rajaram S. Mane, Mohd Ubaidullah, Abdullah M. Al-Enizi, Badr M. Thamer, Ayman Nafady, Vijaykumar V. Jadhav, Shoyebmohamad F. Shaikh, Siddheshwar D. Raut, Balaji G. Ghule, Shivaji D. Waghmare |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
chemistry.chemical_element 02 engineering and technology 010501 environmental sciences 01 natural sciences Bismuth chemistry.chemical_compound Adsorption Dual surface morphology Nitrogen dioxide Spectroscopy lcsh:Science (General) 0105 earth and related environmental sciences Perovskite (structure) Bismuth ferrite Multidisciplinary Structural elucidation Doping BiFeO3 and Pd-BiFeO3 021001 nanoscience & nanotechnology chemistry Chemical engineering NO2 gas sensors 0210 nano-technology Sol–gel synthesis Palladium lcsh:Q1-390 |
| Zdroj: | Journal of King Saud University: Science, Vol 32, Iss 7, Pp 3125-3130 (2020) |
| ISSN: | 1018-3647 |
| Popis: | Undoped and palladium-doped perovskite bismuth ferrite nitrogen dioxide (NO2) gas sensors (BiFeO3 i.e. BFO and Pd-BiFeO3 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 NO2 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 NO2-sensing performance with good sensitivity, excellent selectivity, better response (90 s)/recovery (110 s), and noticeable repeatability under a fixed 100 ppm NO2 gas concentration level at an optimized low operating temperature i.e. 150 °C. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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