Aref Omri, A. Benali, A. Tozri, N. Zaidi, E. Dhahri, Lin Peng, Jiangtao Wu, B. F. O. Costa
{"title":"sr掺杂LaBaFeO₃纳米粒子：结构特征及其在丙酮和乙醇蒸汽气敏中的应用","authors":"Aref Omri, A. Benali, A. Tozri, N. Zaidi, E. Dhahri, Lin Peng, Jiangtao Wu, B. F. O. Costa","doi":"10.1007/s10854-025-15736-5","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, a 10% concentration of Sr<sup>2+</sup> ion is selected to replace Ba<sup>2+</sup> ones in the La<sub>0.75</sub>Ba<sub>0.25</sub>FeO<sub>3</sub> (LBFO) compound to enhance their gas sensing properties. The obtained findings suggest that the substitution of such an amount of barium ions does not affect the orthorhombic structure (space group Pnma) but leads to a distortion in the FeO<sub>6</sub> octahedron of the perovskite materials. Meanwhile, the Raman spectroscopy confirms well the distortion of the FeO<sub>6</sub> octahedron. Both LBFO and LBSFO (La<sub>0.75</sub>Ba<sub>0.15</sub>Sr<sub>0.1</sub>FeO<sub>3</sub>) compounds present very small values of crystallite and particle size, with a remarkable decrease when introducing Sr<sup>2+</sup> ions. The studied compounds, with band gap energies around 2.4 eV, are of high utility for photocatalytic applications. Importantly, the La<sub>0.75</sub>Ba<sub>0.15</sub>Sr<sub>0.1</sub>FeO<sub>3</sub> compound shows higher response values toward acetone and ethanol gases even at low gas concentrations (5 ppm). Response and recovery times were calculated and found to be less than 40 and 20 s, respectively.</p></div>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":"36 26","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Sr-doped LaBaFeO₃ nanoparticles: structural characteristics and application in gas sensing of acetone and ethanol vapors\",\"authors\":\"Aref Omri, A. Benali, A. Tozri, N. Zaidi, E. Dhahri, Lin Peng, Jiangtao Wu, B. F. O. Costa\",\"doi\":\"10.1007/s10854-025-15736-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this work, a 10% concentration of Sr<sup>2+</sup> ion is selected to replace Ba<sup>2+</sup> ones in the La<sub>0.75</sub>Ba<sub>0.25</sub>FeO<sub>3</sub> (LBFO) compound to enhance their gas sensing properties. The obtained findings suggest that the substitution of such an amount of barium ions does not affect the orthorhombic structure (space group Pnma) but leads to a distortion in the FeO<sub>6</sub> octahedron of the perovskite materials. Meanwhile, the Raman spectroscopy confirms well the distortion of the FeO<sub>6</sub> octahedron. Both LBFO and LBSFO (La<sub>0.75</sub>Ba<sub>0.15</sub>Sr<sub>0.1</sub>FeO<sub>3</sub>) compounds present very small values of crystallite and particle size, with a remarkable decrease when introducing Sr<sup>2+</sup> ions. The studied compounds, with band gap energies around 2.4 eV, are of high utility for photocatalytic applications. Importantly, the La<sub>0.75</sub>Ba<sub>0.15</sub>Sr<sub>0.1</sub>FeO<sub>3</sub> compound shows higher response values toward acetone and ethanol gases even at low gas concentrations (5 ppm). Response and recovery times were calculated and found to be less than 40 and 20 s, respectively.</p></div>\",\"PeriodicalId\":646,\"journal\":{\"name\":\"Journal of Materials Science: Materials in Electronics\",\"volume\":\"36 26\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-09-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Science: Materials in Electronics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10854-025-15736-5\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science: Materials in Electronics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10854-025-15736-5","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Sr-doped LaBaFeO₃ nanoparticles: structural characteristics and application in gas sensing of acetone and ethanol vapors
In this work, a 10% concentration of Sr2+ ion is selected to replace Ba2+ ones in the La0.75Ba0.25FeO3 (LBFO) compound to enhance their gas sensing properties. The obtained findings suggest that the substitution of such an amount of barium ions does not affect the orthorhombic structure (space group Pnma) but leads to a distortion in the FeO6 octahedron of the perovskite materials. Meanwhile, the Raman spectroscopy confirms well the distortion of the FeO6 octahedron. Both LBFO and LBSFO (La0.75Ba0.15Sr0.1FeO3) compounds present very small values of crystallite and particle size, with a remarkable decrease when introducing Sr2+ ions. The studied compounds, with band gap energies around 2.4 eV, are of high utility for photocatalytic applications. Importantly, the La0.75Ba0.15Sr0.1FeO3 compound shows higher response values toward acetone and ethanol gases even at low gas concentrations (5 ppm). Response and recovery times were calculated and found to be less than 40 and 20 s, respectively.
期刊介绍：
The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.
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