Premium
Thin film a‐C/Pt nanocomposite catalysts for toxic gas sensors
Author(s) -
Baranov A.,
Fanchenko S.,
Calliari L.,
Speranza G.,
Minati L.,
Kharitonov S.,
Fedoseenkov D.,
Shorokhov A.,
Nefedov A.
Publication year - 2006
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2186
Subject(s) - electrode , platinum , electrochemistry , nanocomposite , materials science , sputter deposition , sputtering , thin film , catalysis , nanotechnology , chemical engineering , optoelectronics , chemistry , organic chemistry , engineering
We compare the sensitivity of electrochemical gas sensors employing either traditional working electrodes based on platinum black or new working electrodes based on a‐C/Pt films deposited by magnetron sputtering (MS). The new electrodes are shown to be five times less sensitive as compared to the traditional ones. However, their Pt content is about 25 times less as compared to traditional electrodes, which suggests a more efficient use of Pt. Morphological, compositional and structural investigations are performed to understand the electrochemical behaviour of the two electrodes. Copyright © 2006 John Wiley & Sons, Ltd.