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Thin film porous membranes for catalytic sensors

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5 Author(s)
Hughes, R.C. ; Sandia Nat. Labs., Albuquerque, NM, USA ; Boyle, T.J. ; Gardner, T.J. ; Brinker, C.J.
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This paper reports on new and surprising experimental data for catalytic film gas sensing resistors coated with nanoporous sol-gel films to impart selectivity and durability to the sensor structure. This work is the result of attempts to build selectivity and reactivity to the surface of a sensor by modifying it with a series of sol-gel layers. The initial sol-gel SiO2 layer applied to the sensor surprisingly showed enhanced O2 interaction with H2 and reduced susceptibility to poisons such as H2S

Published in:

Solid State Sensors and Actuators, 1997. TRANSDUCERS '97 Chicago., 1997 International Conference on  (Volume:1 )

Date of Conference:

16-19 Jun 1997