文献类型：期刊文献

英文题名：Pt-activated Ce4La6O17 nanocomposites for formaldehyde and carbon monoxide sensor at low operating temperature

作者：Yang, Fuxiu[1]; Gu, Chunxiu[1,2]; Liu, Baining[1,2]; Hou, Chunjuan[1,2]; Zhou, Kaowen[1,2]

第一作者：Yang, Fuxiu

通讯作者：Zhou, Kaowen|[114176ba2d92e44bd5a88]周考文;

机构：[1] Biochemical Engineering College, Beijing Union University, Beijing, 100023, China; [2] Beijing Key Laboratory of Biomass Waste Resource Utilization, Beijing, 100023, China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]Biochemical Engineering College, Beijing Union University, Beijing, 100023, China|[1141726]北京联合大学生物化学工程学院;[11417]北京联合大学;

年份：2019

卷号：787

起止页码：173-179

外文期刊名：Journal of Alloys and Compounds

收录：EI(收录号：20190706500719);Scopus(收录号：2-s2.0-85061302780)

语种：英文

外文关键词：Chemical sensors - Gas detectors - Temperature - Sol-gel process - Carbon monoxide - Sol-gels - Cerium compounds - Particle size - Nanocomposites - Lanthanum compounds

摘要：In this paper, a cataluminescence (CTL) type formaldehyde (HCHO) and carbon monoxide (CO) gas sensor based on their cross sensibility on platinum (Pt) activated Ce4La6O17 nanocomposites at lower operating temperature than 150 °C was reported. The Ce4La6O17 nanocomposites were synthesized via sol-gel method. Pt was added into the composites by dipping the composites into the aqueous solution of chloroplatinic acid and calcined at 300 °C. The EDS spectrum and TEM images showed the constituents, distribution and particle size of the obtained composites. The sensing conditions were optimized, and the sensing properties were characterized. The linear ranges of CTL intensity versus analyte concentration was 0.2–54.5 ppm for HCHO and 1.2–67.0 ppm for CO. The limits of detection were 0.04 ppm for HCHO and 0.6 ppm for CO. The recoveries of 10 testing standard samples was 96.6%103.2% for HCHO and 97.6%103.5% for CO. These results indicated that nano-Pt/Ce4La6O17 would be a good candidate for fabricating practical CTL gas sensor for HCHO and CO. ? 2019