西北师范大学学报（自然科学版）2026，Vol.62Issue(5)：8-15,8.DOI:10.16783/j.cnki.nwnuz.2026.05.002
稀土Sm3+掺杂EuVO4对三乙胺气敏性能的增强研究
Enhanced triethylamine gas sensing performance of EuVO4 doped with rare earth Sm3+
摘要
Abstract
To overcome the relatively low triethylamine(TEA)sensing response of pristine EuVO4,Sm3+doped EuVO4 sensing materials were synthesized through a hydrothermal route followed by annealing.SEM,TEM and XRD characterizations revealed that the as-prepared samples are predominantly composed of micrometer-sized particles with rough surfaces and good crystallinity,while Sm3+doping does not alter the primary crystal phase of EuVO4.Gas-sensing measurements demonstrated that the Sm-EuVO4 sensor exhibits a response of approximately 20 toward 100 mg·L-1 TEA at an optimal operating temperature of 220 ℃.A distinct response is still observed at a low TEA concentration of 5 mg·L-1.In addition,the sensor shows rapid response/recovery characteristics of approximately 3s/4s,together with good selectivity and repeatability.The improved TEA sensing performance is likely associated with Sm3+induced modulation of the local structure and surface chemical states of EuVO4,as well as the increased number of gas adsorption and reaction sites afforded by the rough surface morphology.关键词
水热法/Sm3+掺杂/EuVO4/三乙胺/气敏传感器Key words
hydrothermal method/Sm3+doping/EuVO4/triethylamine/gas sensor分类
信息技术与安全科学引用本文复制引用
张倩倩,席炳义,陆世杰,朱凯瑞..稀土Sm3+掺杂EuVO4对三乙胺气敏性能的增强研究[J].西北师范大学学报（自然科学版）,2026,62(5):8-15,8.基金项目
国家自然科学基金资助项目(62541411) （62541411）
甘肃省教育科学"十四五"规划(GS[2025]GHB1392) （GS[2025]GHB1392）
