P1.2.13 Love Wave Device for Real-Time Monitoring of Pollutant Degradation through Photocatalysis
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.2 Resonant Sensors
- Author(s)
- L. Blanc, A. Tetelin, C. Dejous, D. Rebière - Laboratoire IMS, Talons (France), C. Boissière - LCMCP, Paris (France)
- Pages
- 927 - 929
- DOI
- 10.5162/IMCS2012/P1.2.13
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
A mesoporous titania-coated Love wave sensor is used to monitor the real-time degradation of stearic acid through a photocatalytic reaction. The pollutant is deposited directly on the porous film. It leads, at first, to a decrease of the resonant frequency. Then, the device is placed under UV light and its frequency response is real-time monitored. After 12 hours under exposure, the frequency successfully reached its initial value. Acoustic sensors present many advantages compared to conventional measurement systems for photocatalytic activity: real-time response, small size, and low cost. The Love wave devices could allow to monitoring the degradation kinetics of other pollutants. They could also be a useful tool to study the influence of the UV wavelength on the degradation rate.