Gas-sensitive properties of thin tin dioxide films under the influence of hydrogen sulfide

被引：4
|
作者：
Sevast'yanov, E. Yu. [1 ]
Maksimova, N. K. [1 ]
Chernikov, E. V. [1 ]
Firsov, A. A. [1 ]
机构：
[1] Natl Res Tomsk State Univ, VD Kuznetsov Siberian Phys Tech Inst, Tomsk, Russia
来源：
RUSSIAN PHYSICS JOURNAL | 2012年 / 55卷 / 06期
关键词：
gas sensor; tin dioxide; hydrogen sulfide; catalysts; stability; SNO2; SENSOR; H2S;
D O I：
10.1007/s11182-012-9855-9
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In order to develop sensors for selective detection of hydrogen sulfide in the air, the characteristics of thin SnO2 films with various additives (Au, Pt) in the volume and deposited catalysts (Pt / Pd, Au) are studied. The films were obtained by magnetron sputtering. The sensor response to H2S (the ratio of the sensor conductivity G(1) in the presence of hydrogen sulfide in the gas to the conductivity G(0) in the clean air) is studied as a function of the operating temperature and gas concentration in the range 0.1-70 ppm. It is shown that the sensors with the addition of gold in the volume can be used to detect maximum permissible concentrations (7 ppm) of hydrogen sulfide in the working area after stabilization of the characteristics during long-term tests.
引用
收藏
页码：602 / 608
页数：7
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