Ammonia sensor based on NASICON and Cr2O3 electrode

被引：68
作者：
Liang, Xishuang [1 ]
Zhong, Tiegang [1 ]
Guan, Hesong [1 ]
Liu, Fengmin [1 ]
Lu, Geyu [1 ]
Quan, Baofu [1 ]
机构：
[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect Jilin Univ Reg, Changchun 130012, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2009年 / 136卷 / 02期
关键词：
NH3; NASICON; Cr2O3; Gas sensor; STABILIZED ZIRCONIA; COMBINING NASICON; ROOM-TEMPERATURE; OXIDE ELECTRODE; NH3; GAS; FILM; POLYANILINE;
D O I：
10.1016/j.snb.2008.11.028
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A compact tubular sensor based on NASICON (sodium super ionic conductor) and porous Cr2O3 sensing electrode was designed for the detection of ammonia. The sensor gave excellent sensing properties to 50-500 ppm ammonia in air at 250-450 C. The EMF value of the sensor was almost proportional to the logarithm of ammonia concentration, the sensitivity (slope) was -89 mV/decade at 350 C. It was also seen that the sensor showed a good selectivity to ammonia, and an excellent resistance to water vapor, The sensor had speedy response kinetics to ammonia, the 90% response time to 50 ppm ammonia was 30 s, and the recovery time was 60 s. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：479 / 483
页数：5
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