Synthesis, characterization, and sensitivity tests of La0.8Ba0.1Bi0.1FeO3 nanoparticles towards a few parts-per-billion of acetone gas

E.M. Benali; L. Saher; A. Benali; M. Bejar; E. Dhahri; Jiangtao Wu; Lin Peng; P.M. Gordo; J. Pina; B.F.O. Costa

Heliyon (Mar 2024)

Synthesis, characterization, and sensitivity tests of La0.8Ba0.1Bi0.1FeO3 nanoparticles towards a few parts-per-billion of acetone gas

E.M. Benali,
L. Saher,
A. Benali,
M. Bejar,
E. Dhahri,
Jiangtao Wu,
Lin Peng,
P.M. Gordo,
J. Pina,
B.F.O. Costa

Affiliations

E.M. Benali: Laboratoire de Physique Appliquée, Faculté des Sciences, Université de Sfax, B.P. 1171, 3000, Sfax, Tunisia; University of Coimbra, CFisUC, Physics Department, Rua Larga, P-3004-516, Coimbra, Portugal
L. Saher: Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques, CRAPC, BP384, Bou-Ismail, 42004, Tipaza, Algeria
A. Benali: Laboratoire de Physique Appliquée, Faculté des Sciences, Université de Sfax, B.P. 1171, 3000, Sfax, Tunisia; University of Coimbra, CFisUC, Physics Department, Rua Larga, P-3004-516, Coimbra, Portugal; I3N and Physics Department, University of Aveiro, 3810-193, Aveiro, Portugal; Corresponding author. Laboratoire de Physique Appliquée, Faculté des Sciences, Université de Sfax, B.P. 1171, 3000, Sfax, Tunisia.
M. Bejar: Laboratoire de Physique Appliquée, Faculté des Sciences, Université de Sfax, B.P. 1171, 3000, Sfax, Tunisia; Faculté des Sciences de Monastir, Université de Monastir, Avenue de l’Environnement, 5019, Monastir, Tunisia
E. Dhahri: Laboratoire de Physique Appliquée, Faculté des Sciences, Université de Sfax, B.P. 1171, 3000, Sfax, Tunisia
Jiangtao Wu: College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
Lin Peng: College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
P.M. Gordo: University of Coimbra, CFisUC, Physics Department, Rua Larga, P-3004-516, Coimbra, Portugal
J. Pina: University of Coimbra, CQC-IMS, Department of Chemistry, Rua Larga, 3004-535, Coimbra, Portugal
B.F.O. Costa: University of Coimbra, CFisUC, Physics Department, Rua Larga, P-3004-516, Coimbra, Portugal; Corresponding author.

Journal volume & issue: Vol. 10, no. 5
p. e26778

Abstract

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In the present paper, the La0.8Ba0.1Bi0.1FeO3 powders were synthesized via the auto-combustion method. The optical, the positron annihilation spectroscopy and the gas sensing properties of our sample were investigated simultaneously. FTIR spectrum revealed the antisymmetric deformation vibrations of the Fe–O and Fe–O–Fe bonds inside the octahedron FeO6. The optical bandgap (Egap) of the La0.8Ba0.1Bi0.1FeO3 compound was found to be equal to 2.23 eV. We confirmed by the positron annihilation studies, the existence of open volume defects and vacancy sized defects, at the grain/interfaces between vacancy clusters and grains at the interfaces intersection (triple-lines). Notably, the La0.8Ba0.1Bi0.1FeO3 perovskite exhibits an excellent response toward acetone gas, with ultra-fast response and recovery times to some parts-per-billion (ppb) of this tested gas.

Published in Heliyon

ISSN: 2405-8440 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Science: Science (General); Social Sciences: Social sciences (General)
Website: https://www.cell.com/heliyon/home

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