P2GS.28 - Gas Sensor Technology based on Titanium Oxide and Platinum-Carbon Layers

M. El Achhab, E. Knorr, K. Schierbaum, University Of Vienna, Universitätsring 1, 1010 Vienna, Austria
We report a sensor technology, based on plasma electrolytic oxidation, to form porous titanium oxide layers with well-defined phases and a reproducible microstructure on titanium substrates. By using a imprinting method to deposit graphite or catalytically active graphite-platinum electrodes, chemical sensors are obtained with high stability. Our design enables the application of a variety of different detection principles. They include non-isothermal and isothermal calorimetry, impedance
more » ... ry, impedance spectroscopy as well as amperometry. Results are presented for H2O, H2, NO2 and CO sensing with the most appropriate detection principle, electrode composition and titanium oxide microstructure.
doi:10.5162/imcs2018/p2gs.28 fatcat:7dxzjeplkvdrtgl2jffe3pd7tm