Next Article in Journal
Gas-to-Particle Conversion in Surface Discharge Nonthermal Plasmas and Its Implications for Atmospheric Chemistry
Next Article in Special Issue
A High Temperature Capacitive Humidity Sensor Based on Mesoporous Silica
Previous Article in Journal
Mapping the Philippines’ Mangrove Forests Using Landsat Imagery
Previous Article in Special Issue
Effects of Calcination Temperature and Acid-Base Properties on Mixed Potential Ammonia Sensors Modified by Metal Oxides
Open AccessArticle

Application of V2O5/WO3/TiO2 for Resistive-Type SO2 Sensors

Functional Materials Laboratory, University of Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
National Institute of Advanced Industrial Science and Technology (AIST), Advanced Manufacturing Research Institute, 2266-98 Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, Japan
Author to whom correspondence should be addressed.
Sensors 2011, 11(3), 2982-2991;
Received: 11 February 2011 / Revised: 1 March 2011 / Accepted: 3 March 2011 / Published: 7 March 2011
(This article belongs to the Special Issue Gas Sensors - 2010)
A study on the application of V2O5/WO3/TiO2 (VWT) as the sensitive material for resistive-type SO2 sensor was conducted, based on the fact that VWT is a well-known catalyst material for good selective catalytic nitrogen oxide reduction with a proven excellent durability in exhaust gases. The sensors fabricated in this study are planar ones with interdigitated electrodes of Au or Pt. The vanadium content of the utilized VWT is 1.5 or 3.0 wt%. The resistance of VWT decreases with an increasing SO2 concentration in the range from 20 ppm to 5,000 ppm. The best sensor response to SO2 occurs at 400 °C using Au electrodes. The sensor response value is independent on the amount of added vanadium but dependent on the electrode materials at 400 °C. These results are discussed and a sensing mechanism is discussed. View Full-Text
Keywords: sulfur dioxide; selective catalytic reduction (SCR); gas sensor; vanadia tungsten titania sulfur dioxide; selective catalytic reduction (SCR); gas sensor; vanadia tungsten titania
MDPI and ACS Style

Izu, N.; Hagen, G.; Schönauer, D.; Röder-Roith, U.; Moos, R. Application of V2O5/WO3/TiO2 for Resistive-Type SO2 Sensors. Sensors 2011, 11, 2982-2991.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

Only visits after 24 November 2015 are recorded.
Back to TopTop