LARGE OPTICAL CO SENSITIVITY OF NO2-PRETREATED AU-NIO COMPOSITE FILMS

Authors
ANDO M ZEHETNER J KOBAYASHI T HARUTA M
Citation
M. Ando et al., LARGE OPTICAL CO SENSITIVITY OF NO2-PRETREATED AU-NIO COMPOSITE FILMS, Sensors and actuators. B, Chemical, 36(1-3), 1996, pp. 513-516
Citations number
15
Categorie Soggetti
Electrochemistry,"Chemistry Analytical","Instument & Instrumentation
Journal title
Sensors and actuators. B, Chemical → ACNP
ISSN journal
09254005
Volume
36
Issue
1-3
Year of publication
1996
Pages
513 - 516
Database
ISI
SICI code
0925-4005(1996)36:1-3<513:LOCSON>2.0.ZU;2-A
Abstract
Gold-nickel oxide (Au-NiO) composite films were prepared by sputter-de position of fine Au particles on a glass plate substrate followed by p yrolysis of spin-coated nickel 2-ethylhexanoate. They showed reversibl e changes in visible-near IR light absorption due to CO in air. The pr etreatment of the Au-NiO composite films with NO2 appreciably enhanced the CO-sensitive absorbance change, allowing optical CO detection ove r a wide concentration range of 50-10 000 ppm.