采用掺杂和非化学计量双调节的LaFeO3气体传感器对乙醇进行低温检测并具有优异的选择性

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-01-31 DOI:10.1016/j.jallcom.2025.178590

Boyan Fu , Leyao Bi , Jiahui Lin , Jiaxing Fu , Junsheng Wen , Binglin Zou , Chunjie Wang , Yue Wang

{"title":"采用掺杂和非化学计量双调节的LaFeO3气体传感器对乙醇进行低温检测并具有优异的选择性","authors":"Boyan Fu , Leyao Bi , Jiahui Lin , Jiaxing Fu , Junsheng Wen , Binglin Zou , Chunjie Wang , Yue Wang","doi":"10.1016/j.jallcom.2025.178590","DOIUrl":null,"url":null,"abstract":"<div><div>ABO3-type gas sensors for ethanol gas-sensing remain a significant challenge. In this paper, porous microspheres of La0.9Fe1-xCoxO3 (x = 0, 0.05, 0.1, 0.15, 0.2) were synthesized via a ultrasonic-assisted hydrothermal method. The materials were characterized with various techniques to determine their phase structures, morphologies, electrochemical properties, and sensing abilities. For all investigated sensors, La0.9Fe0.85Co0.15O3 exhibited a response value of 50.445 for 100 ppm ethanol gas at 200 °C (RH = 35 %), which is over eight times higher than that of LaFeO3 under the same conditions. In addition to its high response to ethanol, La0.9Fe0.85Co0.15O3 has excellent selectivity, humidity resistance (35–95 % RH), and a fast response/recovery time (18/9 s). Further analyses demonstrate that the synergistic effect of A-site cation defects and Co-doping plays a pivotal role in enhancing sensing performance by effectively increasing oxygen vacancy content and adsorption energy. This work presents an effective approach for developing high-performance ethanol gas sensors based on LaFeO3.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1013 ","pages":"Article 178590"},"PeriodicalIF":6.3000,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Low-temperature detection and excellent selectivity of ethanol using LaFeO3 gas sensors with dual regulation of doping and non-stoichiometry\",\"authors\":\"Boyan Fu , Leyao Bi , Jiahui Lin , Jiaxing Fu , Junsheng Wen , Binglin Zou , Chunjie Wang , Yue Wang\",\"doi\":\"10.1016/j.jallcom.2025.178590\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>ABO3-type gas sensors for ethanol gas-sensing remain a significant challenge. In this paper, porous microspheres of La0.9Fe1-xCoxO3 (x = 0, 0.05, 0.1, 0.15, 0.2) were synthesized via a ultrasonic-assisted hydrothermal method. The materials were characterized with various techniques to determine their phase structures, morphologies, electrochemical properties, and sensing abilities. For all investigated sensors, La0.9Fe0.85Co0.15O3 exhibited a response value of 50.445 for 100 ppm ethanol gas at 200 °C (RH = 35 %), which is over eight times higher than that of LaFeO3 under the same conditions. In addition to its high response to ethanol, La0.9Fe0.85Co0.15O3 has excellent selectivity, humidity resistance (35–95 % RH), and a fast response/recovery time (18/9 s). Further analyses demonstrate that the synergistic effect of A-site cation defects and Co-doping plays a pivotal role in enhancing sensing performance by effectively increasing oxygen vacancy content and adsorption energy. This work presents an effective approach for developing high-performance ethanol gas sensors based on LaFeO3.</div></div>\",\"PeriodicalId\":344,\"journal\":{\"name\":\"Journal of Alloys and Compounds\",\"volume\":\"1013 \",\"pages\":\"Article 178590\"},\"PeriodicalIF\":6.3000,\"publicationDate\":\"2025-01-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Alloys and Compounds\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0925838825001483\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Alloys and Compounds","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925838825001483","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

摘要

用于乙醇气敏的abo3型气体传感器仍然是一个重大挑战。本文采用超声辅助水热法制备了La0.9Fe1-xCoxO3 （x = 0,0.05, 0.1, 0.15, 0.2）多孔微球。利用各种技术对材料进行表征，以确定其相结构、形态、电化学性能和传感能力。在200℃（RH = 35%）下，La0.9Fe0.85Co0.15O3对100 ppm乙醇气体的响应值为50.445，比LaFeO3在相同条件下的响应值高8倍以上。La0.9Fe0.85Co0.15O3除了对乙醇的高响应外，还具有优异的选择性、耐湿性（35-95% RH）和快速的响应/恢复时间（18/9 s）。进一步分析表明，a位阳离子缺陷和共掺杂的协同效应通过有效提高氧空位含量和吸附能，对提高传感性能起着关键作用。本文提出了一种基于LaFeO3的高性能乙醇气体传感器的有效方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Low-temperature detection and excellent selectivity of ethanol using LaFeO3 gas sensors with dual regulation of doping and non-stoichiometry

查看原文本刊更多论文

Low-temperature detection and excellent selectivity of ethanol using LaFeO3 gas sensors with dual regulation of doping and non-stoichiometry

ABO₃-type gas sensors for ethanol gas-sensing remain a significant challenge. In this paper, porous microspheres of La_0.9Fe_1-xCo_xO₃ (x = 0, 0.05, 0.1, 0.15, 0.2) were synthesized via a ultrasonic-assisted hydrothermal method. The materials were characterized with various techniques to determine their phase structures, morphologies, electrochemical properties, and sensing abilities. For all investigated sensors, La_0.9Fe_0.85Co_0.15O₃ exhibited a response value of 50.445 for 100 ppm ethanol gas at 200 °C (RH = 35 %), which is over eight times higher than that of LaFeO₃ under the same conditions. In addition to its high response to ethanol, La_0.9Fe_0.85Co_0.15O₃ has excellent selectivity, humidity resistance (35–95 % RH), and a fast response/recovery time (18/9 s). Further analyses demonstrate that the synergistic effect of A-site cation defects and Co-doping plays a pivotal role in enhancing sensing performance by effectively increasing oxygen vacancy content and adsorption energy. This work presents an effective approach for developing high-performance ethanol gas sensors based on LaFeO₃.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.