Gas sensors based on plasma-electrochemically oxidized titanium foils
We have developed a preparation technique to form graphite/TiO<sub>2</sub>/Ti and platinum–graphite/TiO<sub>2</sub>/Ti solid-state sensors. It is based on plasma electrolytic oxidation (PEO) of titanium foils, whereby a porous titanium oxide layer is formed with well-defined...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2016-07-01
|
| Series: | Journal of Sensors and Sensor Systems |
| Online Access: | http://www.j-sens-sens-syst.net/5/273/2016/jsss-5-273-2016.pdf |
| Summary: | We have developed a preparation technique to form graphite/TiO<sub>2</sub>/Ti and
platinum–graphite/TiO<sub>2</sub>/Ti solid-state sensors. It is based on plasma
electrolytic oxidation (PEO) of titanium foils, whereby a porous titanium
oxide layer is formed with well-defined phase composition and a reproducible
microstructure. A printing method is used to deposit graphite or
catalytically active graphite–platinum electrodes. Our design enables the
application of a variety of different detection principles such as
calorimetry, impedances and amperometry. This study reports results for
H<sub>2</sub>, H<sub>2</sub>O, and CO sensing at room temperature with the most
appropriate detection principle, electrode composition and titanium oxide
microstructure. |
|---|---|
| ISSN: | 2194-8771 2194-878X |