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, KW[1]

机构：[1]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China;[2]Beijing Key Lab Biomass Waste Resource Utilizat, Beijing 100023, Peoples R China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]corresponding author), Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R 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：;WOS:【SCI-EXPANDED(收录号:WOS:000462592500021)】；

基金：This work was supported by Beijing Natural Science Foundation (Grant No. 2152013) and National High Technology Research and Development Program of China (863 Program No. 2015AA020200).

语种：英文

外文关键词：Formaldehyde; Carbon monoxide; Cataluminescence; Gas sensor; Low temperature

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 degrees 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 degrees 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%similar to 103.2% for HCHO and 97.6%similar to 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. (C) 2019 Published by Elsevier B.V.