Amperometric SO2 gas sensors based on solid polymer electrolytes

被引：38

作者：

Chiou, CY ^{[1
]}

Chou, TC ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2002年 / 87卷 / 01期

关键词：

solid polymer electrolyte (SPE); gas sensor; SO2; sensor; amperometric sensor;

D O I：

10.1016/S0925-4005(02)00163-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Precious metals (Pt, Pd and Au) have been prepared on the solid polymer electrolyte (SPE) by chemical plating and vapor deposition. The characteristics of metal/SPE and the electro-oxidation behavior of sulfur dioxide on the prepared electrodes have been studied in this paper. A linear relationship between the limiting oxidation current and the concentration Of SO2 was obtained. The sensitivities of the Pt/SPE, Au/SPE and Pd/SPE sensing electrodes were 2.26, 0.917 and 0.176 muA/cm(2) ppm), respectively, for SO2 concentrations in the range of 25-500 ppm. The effects of gaseous flow rate and the interference on the sensor performance were also studied. (C) 2002 Published by Elsevier Science B.V.

引用

页码：1 / 7

页数：7

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