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Effect of a porous Pt/alumina cover layer for V2O5/WO3/TiO2 resistive SO2 sensing materials

Title data

Izu, Noriya ; Hagen, Gunter ; Schubert, Franz ; Schönauer-Kamin, Daniela ; Moos, Ralf:
Effect of a porous Pt/alumina cover layer for V2O5/WO3/TiO2 resistive SO2 sensing materials.
In: Journal of the Ceramic Society of Japan. Vol. 121 (2013) . - pp. 734-737.
ISSN 1882-0743
DOI: https://doi.org/10.2109/jcersj2.121.734

Official URL: Volltext

Abstract in another language

Planar resistive type SO2 sensors based on V2O5/WO3/TiO2 (VWT) have been reported to respond well to SO2 but with large cross-effects of NO and NH3. In this study, we added a porous Pt/alumina cover layer on a VWT film in order to decrease the cross sensitivities. The sensor response to SO2 is hardly affected by the Pt/alumina layer in the case of VWT sensor with 3.0 wt% V2O5 with Au electrodes, while the Pt/alumina layer affects the response of other VWT sensors. The VWT sensor (3.0 wt%V2O5) with Au electrodes with the porous Pt/alumina cover layer shows much smaller responses to CO, H2, H2O, NH3, and NO compared with the sensor without Pt /alumina cover layer. The porous Pt/alumina cover layer has a potential to improve the selectivity of the VWT sensor.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 12 Jan 2015 13:16
Last Modified: 14 Apr 2016 07:24
URI: https://eref.uni-bayreuth.de/id/eprint/5474