Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5008820 | Sensors and Actuators B: Chemical | 2017 | 12 Pages |
Abstract
Al3+ and In3+ are co-doped in Si4+ site of lanthanum silicate oxyapatite (LSAIO) and the influences of Al3+/In3+ molar ratio on the properties of LSAIO are investigated. The co-doped materials achieve about 97% of the theoretical density at 1873 K. The total ionic conductivity of the Al3+/In3+ co-doped samples are much higher than those of single Al3+ or In3+ doped samples. A LSAIO electrolyte with dense/porous bilayer structure is fabricated for a solid electrolyte type NO2 sensor. The cobalt-free perovskite oxide La0.8Sr0.2Fe0.8Cu0.2O3-δ (LSFC) with the particle size of <50 nm as the sensing electrode is in-situ prepared in the porous LSAIO layer by impregnation method. The sensor exhibits excellent amperometric response characteristics to 10-200 ppm NO2 at 873-1073 K and good anti-interference ability to various coexistence gases.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Lei Dai, Ming Shi, Wen Han, Wei Meng, Zhangxing He, Liguang Zhu, Ling Wang,