Preparation of H2 and LPG gas sensor

被引:43
作者
Wang, JH [1 ]
Tong, MS [1 ]
Wang, XQ [1 ]
Ma, Y [1 ]
Liu, DL [1 ]
Wu, JK [1 ]
Gao, DS [1 ]
Du, GT [1 ]
机构
[1] Jilin Univ, Dept Elect Engn, Changchun 130023, Peoples R China
关键词
gamma-Fe2O3; surface-coat; sensitivity; selectivity;
D O I
10.1016/S0925-4005(01)01065-6
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Among the various metal oxide additives tested, Ag2O is outstanding in promoting the sensing proper-ties of gamma-Fe2O3 element to H-2 in air. The gamma-Fe2O3 element loaded with 6 wt.% Ag2O is very sensitive to H, at 320 degreesC, while it is also sensitive to many other gases, especially C2H5OH. The element is highly sensitive and selective to H-2 and LPG, after it is modified with the surface-coat of Al2O3 containing 1.5 wt.% PtO. The response of this element to H-2 and C4H10 is rather rapid (only 4 and 6 s, respectively). and its resistance only changes 8.9% even when the ambient relative humidity varies broadly (from 10 to 98%). So the element is very useful to detect the leakage of coal gas or LPG in domestic appliances. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:95 / 97
页数:3
相关论文
共 4 条
[1]   SOME ELECTRICAL-PROPERTIES OF GAMMA-FE2O3 CERAMICS [J].
NAKATANI, Y ;
MATSUOKA, M .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1983, 22 (02) :233-239
[2]  
NAKATANI Y, 1983, P INT M CHEM SENSORS, P147
[3]  
SHIRATORI M, 1983, P INT M CHEM SENS FU, P119
[4]  
WANG J, 1998, CHINESE J TRANSDUCTI, V3, P12