Particle Size Effect on Optical and Gas-Sensing Properties of La0.67Ca0.2Ba0.13Fe0.97M0.03O3 (M = Ti4+, Mn3+, and Cr3+) Compounds-Reference-Cited by-同舟云学术

Particle Size Effect on Optical and Gas-Sensing Properties of La0.67Ca0.2Ba0.13Fe0.97M0.03O3 (M = Ti4+, Mn3+, and Cr3+) Compounds

Published:2024-02-08 Issue:2 Volume:14 Page:173
ISSN:2073-4352
Container-title:Crystals
language:en
Short-container-title:Crystals

Author:

Dhahri Ahmed¹²,Saoudi H.²,Gavinho S. R.³^ORCID,Benali A.¹²³,Abdelmoula N.⁴,Dhahri R.²,Peng Lin⁵,Wu Jiangtao⁵,Pina J.⁶^ORCID,Costa B. F. O.¹^ORCID

Affiliation:

1. CFisUC, Physics Department, University of Coimbra, Rua Larga, 3004-516 Coimbra, Portugal

2. Laboratoire de Physique Appliquée, Faculté des Sciences, Université de Sfax, B.P. 1171, Sfax 3000, Tunisia

3. I3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal

4. Laboratoire des Matériaux Multifonctionnels et Applications, Faculté des Sciences, Université de Sfax, Sfax 3000, Tunisia

5. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, China

6. CQC-IMS, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535 Coimbra, Portugal

Abstract

In the present work, the morphological, optical, and gas-sensing properties of La0.67Ca0.2Ba0.13Fe0.97M0.03O3 (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 La0.67Ca0.2Ba0.13Fe0.97Ti0.03O3 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.

Funder

FCT—Fundação para a Ciência e a Tecnologia

Publisher

MDPI AG

Link

https://www.mdpi.com/2073-4352/14/2/173/pdf

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