Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 84, Issue 2-3, Pages 95-97Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-4005(01)01065-6
Keywords
gamma-Fe2O3; surface-coat; sensitivity; selectivity
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available