高等学校化学学报2025，Vol.46Issue(8)：9-16,8.DOI:10.7503/cjcu20250108
Dy2O3/La2O3稀土复合氧化物催化发光传感1,2-环氧丙烷
Cataluminescent Sensing of 1,2-Epoxypropane Using Dy2O3/La2O3 Rare Earth Composite Oxides
摘要
Abstract
In this study,we developed a high-performance cataluminescence(CTL)sensing platform based on Dy2O3/La2O3 rare-earth composite oxides for specific detection of 1,2-epoxypropane(PO).Through optimized compo-sition regulation of the rare-earth oxides,the Dy 2 O 3/La 2 O 3 heterointerface demonstrated remarkable synergistic catalytic effects,achieving both high sensitivity(LOD=82.8 μmol/L)and exceptional selectivity(10-fold higher response to PO than interferents).Under optimal conditions(detection wavelength:575 nm;temperature:360℃;gas flow rate:320 mL/min),the CTL intensity showed excellent linear correlation with PO concentration(y=701.25x+15085.19,R2=0.9969),with an ultralow detection limit(8.28×10-5 mol/L).The sensing system exhibited outstanding stability(RSD<3%over 11 cycles)and satisfactory recovery rates(96-108%).A"photoexcitation-oxygen activation-selective oxidation-characteristic luminescence"sensing mechanism was proposed.This work provides a novel strategy for developing rare-earth oxide-based sensing materials and offers an innovative solution for environmental VOC monitoring.关键词
稀土复合氧化物/界面协同效应/环氧丙烷检测/催化发光传感器/气敏反应机理Key words
Rare-earth composite oxides/Interfacial synergistic effect/Propylene oxide detection/Catalumines-cence sensor/Gas-sensing reaction mechanism分类
化学化工引用本文复制引用
张雨薇,杜一浩,张琰图,李云云..Dy2O3/La2O3稀土复合氧化物催化发光传感1,2-环氧丙烷[J].高等学校化学学报,2025,46(8):9-16,8.基金项目
陕西省科技厅项目(批准号:2024JC-YBQN-0120)、延安大学博士科研启动项目(批准号:YAU202303811)、大学生创新创业训练计划项目(批准号:D2024247)、延安大学校级科研计划项目(批准号:YDQ2019-20)和国家自然科学基金(批准号:52063029)资助.Supported by the Project of the Department of Science and Technology of Shannxi Province,China(No.2024JC-YBQN-0120),the Doctoral Research Initiation Project of Yan'an University,China(No.YAU202303811),the College Student Innovation and Entrepreneurship Training Program Project of Yan'an University,China(No.D2024247),the Yan'an University Campus level Scientific Research Program Project of Yan'an University,China(No.YDQ22019-20)and the National Natural Science Foundation of China(No.52063029). （批准号:2024JC-YBQN-0120）
