Particle Size Effect on Optical and Gas-Sensing Properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti<sup>4+</sup>, Mn<sup>3+</sup>, and Cr<sup>3+</sup>) Compounds
In the present work, the morphological, optical, and gas-sensing properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti, Cr, and Mn) nano-powders prepared via the a...
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MDPI AG
2024-02-01
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| Series: | Crystals |
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| author | Ahmed Dhahri H. Saoudi S. R. Gavinho A. Benali N. Abdelmoula R. Dhahri Lin Peng Jiangtao Wu J. Pina B. F. O. Costa |
| author_facet | Ahmed Dhahri H. Saoudi S. R. Gavinho A. Benali N. Abdelmoula R. Dhahri Lin Peng Jiangtao Wu J. Pina B. F. O. Costa |
| author_sort | Ahmed Dhahri |
| collection | DOAJ |
| description | In the present work, the morphological, optical, and gas-sensing properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti, Cr, and Mn) nano-powders prepared via the auto-combustion route, were investigated. TEM images prove the nanoscale particle size of all the samples. Optical studies confirm the semiconductor behavior of the studied materials. The response of the prepared nano-powders towards the presence of two gas-reducing agents (ethanol and acetone) was investigated. From the resistance ratio under air and gas, it was possible to determine the response to different gases and deduce that La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>Ti<sub>0.03</sub>O<sub>3</sub> presents the highest responses to ethanol and acetone. Likewise, we deduced that the prepared materials were able to detect low concentrations of ethanol and acetone gases. |
| first_indexed | 2024-03-07T22:36:55Z |
| format | Article |
| id | doaj.art-ccec73fe0d45446fba6e2c6e47bf6e6d |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-07T22:36:55Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-ccec73fe0d45446fba6e2c6e47bf6e6d2024-02-23T15:13:16ZengMDPI AGCrystals2073-43522024-02-0114217310.3390/cryst14020173Particle Size Effect on Optical and Gas-Sensing Properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti<sup>4+</sup>, Mn<sup>3+</sup>, and Cr<sup>3+</sup>) CompoundsAhmed Dhahri0H. Saoudi1S. R. Gavinho2A. Benali3N. Abdelmoula4R. Dhahri5Lin Peng6Jiangtao Wu7J. Pina8B. F. O. Costa9CFisUC, Physics Department, University of Coimbra, Rua Larga, 3004-516 Coimbra, PortugalLaboratoire de Physique Appliquée, Faculté des Sciences, Université de Sfax, B.P. 1171, Sfax 3000, TunisiaI3N and Physics Department, University of Aveiro, 3810-193 Aveiro, PortugalCFisUC, Physics Department, University of Coimbra, Rua Larga, 3004-516 Coimbra, PortugalLaboratoire des Matériaux Multifonctionnels et Applications, Faculté des Sciences, Université de Sfax, Sfax 3000, TunisiaLaboratoire de Physique Appliquée, Faculté des Sciences, Université de Sfax, B.P. 1171, Sfax 3000, TunisiaCollege of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, ChinaCollege of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, ChinaCQC-IMS, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, PortugalCFisUC, Physics Department, University of Coimbra, Rua Larga, 3004-516 Coimbra, PortugalIn the present work, the morphological, optical, and gas-sensing properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti, Cr, and Mn) nano-powders prepared via the auto-combustion route, were investigated. TEM images prove the nanoscale particle size of all the samples. Optical studies confirm the semiconductor behavior of the studied materials. The response of the prepared nano-powders towards the presence of two gas-reducing agents (ethanol and acetone) was investigated. From the resistance ratio under air and gas, it was possible to determine the response to different gases and deduce that La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>Ti<sub>0.03</sub>O<sub>3</sub> presents the highest responses to ethanol and acetone. Likewise, we deduced that the prepared materials were able to detect low concentrations of ethanol and acetone gases.https://www.mdpi.com/2073-4352/14/2/173optical propertiesgas sensornanostructuresresponse timerecovery time |
| spellingShingle | Ahmed Dhahri H. Saoudi S. R. Gavinho A. Benali N. Abdelmoula R. Dhahri Lin Peng Jiangtao Wu J. Pina B. F. O. Costa Particle Size Effect on Optical and Gas-Sensing Properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti<sup>4+</sup>, Mn<sup>3+</sup>, and Cr<sup>3+</sup>) Compounds Crystals optical properties gas sensor nanostructures response time recovery time |
| title | Particle Size Effect on Optical and Gas-Sensing Properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti<sup>4+</sup>, Mn<sup>3+</sup>, and Cr<sup>3+</sup>) Compounds |
| title_full | Particle Size Effect on Optical and Gas-Sensing Properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti<sup>4+</sup>, Mn<sup>3+</sup>, and Cr<sup>3+</sup>) Compounds |
| title_fullStr | Particle Size Effect on Optical and Gas-Sensing Properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti<sup>4+</sup>, Mn<sup>3+</sup>, and Cr<sup>3+</sup>) Compounds |
| title_full_unstemmed | Particle Size Effect on Optical and Gas-Sensing Properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti<sup>4+</sup>, Mn<sup>3+</sup>, and Cr<sup>3+</sup>) Compounds |
| title_short | Particle Size Effect on Optical and Gas-Sensing Properties of La<sub>0.67</sub>Ca<sub>0.2</sub>Ba<sub>0.13</sub>Fe<sub>0.97</sub>M<sub>0.03</sub>O<sub>3</sub> (M = Ti<sup>4+</sup>, Mn<sup>3+</sup>, and Cr<sup>3+</sup>) Compounds |
| title_sort | particle size effect on optical and gas sensing properties of la sub 0 67 sub ca sub 0 2 sub ba sub 0 13 sub fe sub 0 97 sub m sub 0 03 sub o sub 3 sub m ti sup 4 sup mn sup 3 sup and cr sup 3 sup compounds |
| topic | optical properties gas sensor nanostructures response time recovery time |
| url | https://www.mdpi.com/2073-4352/14/2/173 |
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