Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 209, Issue -, Pages 1091-1096Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2014.12.027
Keywords
TiO2 nanotubes; Anodization; Chemical sensor
Funding
- Italian Ministry of Education through project FIRB Rete Nazionale di Ricerca sulle Nanoscienze ItalNanoNet [RBPR05JH2P]
- Italian MIUR [FIRB RBAP115AYN]
- European Communities 7th Framework Programme [NMP3-LA-2010-246334]
- ORAMA and Region Lombardia (Italy) through the project Xnano
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In this work we report about the synthesis and gas sensing properties of large surface area and stable biphase titania nanotubes. The nanosized tubular structures have been obtained by means of electrochemical anodization of thin Nb-Ti metallic films. Crystallization was accomplished by thermal annealing, to obtain biphase titania. The morphological analysis shows that the obtained structures are well-ordered and highly aligned titania nanotubes. Investigations of the structures' gas sensing properties show that they have high and reversible response towards H-2, CO, acetone and ethanol over a wide range of the operating temperatures. (C) 2014 Elsevier B.V. All rights reserved.
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