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VAZQUEZ, R. GISPERT-GUIRADO, F. LLOBET, E. MOZALEV, A.
Original Title
Selective Hydrogen Detection with TiO2 Nanofilm via the Porous-Alumina-Assisted Anodizing of Titanium Layers
Type
conference paper
Language
English
Original Abstract
Nanostructured metal oxides grown via porous-alumina (PA)-assisted anodization of sputtered refractory metals are of increasing interest as active layers for gas microsensors. Although nanostructured titanium oxide is particularly attractive, PA-assisted anodic formation of titanium oxide nanostructures remains a challenge because of their chemical instability caused by substantially mixing titania with alumina during film growth. Here we advance the approach and employ a unique combination of electrical and electrolytic conditions to achieve the PA-assisted formation of a stable amorphous TiO2 nanofilm on dielectric substrates, followed by high-temperature annealing to attain crystallization and enhance semiconductor properties of the film. A laboratory-scale microsensor employing the TiO2 nanofilm as active layer shows good sensitivity and selectivity to hydrogen against ethanol and carbon monoxide, which is in demand for proton-exchange fuel-cell applications.
Keywords
nanostructured metal oxides, anodizing, porous alumina, titanium oxide, hydrogen sensor
Authors
VAZQUEZ, R.; GISPERT-GUIRADO, F.; LLOBET, E.; MOZALEV, A.
RIV year
2014
Released
25. 12. 2014
Publisher
IEEE
Location
IEEE Service Center 445 Hoes Lane Piscataway, NJ 08855-1331 USA
ISBN
978-1-4799-0161-6
Book
Proceedings of IEEE sensors 2014
Edition number
1
Pages from
807
Pages to
810
Pages count
4
BibTex
@inproceedings{BUT111212, author="Rosa Maria {Vazquez} and Francesc {Gispert-Guirado} and Eduard {Llobet} and Alexander {Mozalev}", title="Selective Hydrogen Detection with TiO2 Nanofilm via the Porous-Alumina-Assisted Anodizing of Titanium Layers", booktitle="Proceedings of IEEE sensors 2014", year="2014", number="1", pages="807--810", publisher="IEEE", address="IEEE Service Center 445 Hoes Lane Piscataway, NJ 08855-1331 USA", isbn="978-1-4799-0161-6" }