A cataluminescence gas sensor for triethylamine based on nanosized LaF3–CeO2
A cataluminescence gas sensor for triethylamine based on nanosized LaF3–CeO2
复制标题
DOI：
10.1016/j.snb.2012.04.079
复制
发表时间：
2012-07
影响因子：
8.4
通讯作者：
Liu Xu;Hongjie Song;Jing Hu;Yi Lv;Kailai Xu
中科院分区：
文献类型：
--
作者：
Liu Xu;Hongjie Song;Jing Hu;Yi Lv;Kailai Xu
基于三乙胺（TEA）在纳米LaF 3-CeO 2表面的催化氧化发光（CTL），提出了一种新的高灵敏度的TEA气体传感器。采用煅烧法成功制备了LaF 3-CeO 2纳米粒子。研究了其发光特性和最佳条件。在最佳条件下，该传感器的线性范围为0.9- 54 ppm，相关系数（R）为0.9987，检出限（S/N=3）为0.2ppm。相对标准偏差（R.S.D.）对36.5ppm三乙胺的回收率为4.3%（n=6）。6天后，传感器的催化活性没有显著变化，R.S.D.不到5%。该传感器具有灵敏度高、选择性好等优点。
A novel and highly sensitive gas sensor for triethylamine (TEA) was proposed based on its cataluminescence (CTL) from the catalytic oxidation on the surface of nano-sized LaF3–CeO2. The LaF3–CeO2nanoparticles were successfully prepared by using a calcination method. The luminescence characteristics and the optimal conditions were investigated in detail. Under the optimal conditions, the present gas sensor exhibited a linear range of 0.9–54ppm, with a correlation coefficient (R) of 0.9987 and a limit of detection (S/N=3) of 0.2ppm. The relative standard deviation (R.S.D.) for 36.5ppm triethylamine was 4.3% (n=6). There was no significant change in the catalytic activity of the sensor after 6 days, with a R.S.D. less than 5%. The proposed triethylamine sensor showed the advantages of good sensitivity and high selectivity.