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Doped TiO2-Nanotubular Sensor Electrodes for Gas Sensing Applications

Saruhan, Bilge and Gönüllü, Y. and Yüce, Ayhan and Mondragon Rodriguez, C. G. (2011) Doped TiO2-Nanotubular Sensor Electrodes for Gas Sensing Applications. ICAAC 2011, 23-28. Januar 2011, Daytona, Florida, USA.

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Abstract

Relying on its unique properties, titanium dioxide is employed in a versatility of applications, gas sensing being one of them. Low temperature synthesis of doped TiO2-coatings and their nano-structuring enhance these properties. It is reported that the use of one-dimensional (1-D) nanostructures instead of nano-crystalline films yields more than 2-fold increase in efficiency by improving the sensing properties. Nano-tubular sensing electrodes improve sensing performance due to high surface to volume ratio and thus enabling strong interaction between the surrounding gas and the sensing material. This work reports the synthesis of coatings having TiO2-nanotubes by AAO-templated and non-templated anodic oxidation method. Using these coatings gas sensor devices was fabricated and their sensing properties were analyzed towards reducing and oxidizing gases. Long-term stability of the nano-structures was investigated to determine the life-time of sensors. Additionally trivalent additive doped TiO2 nanotubes were synthesized by AAO-templated sol-gel method and phase sequences with composition and temperature were analysed. Sensor properties obtained with various compositions and synthesis methods were compared.

Item URL in elib:https://elib.dlr.de/71294/
Document Type:Conference or Workshop Item (Speech)
Title:Doped TiO2-Nanotubular Sensor Electrodes for Gas Sensing Applications
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Saruhan, BilgeDLR-WFUNSPECIFIED
Gönüllü, Y.DLR-WFUNSPECIFIED
Yüce, AyhanDLR-WFUNSPECIFIED
Mondragon Rodriguez, C. G.DLR-WFUNSPECIFIED
Date:27 January 2011
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Nanotubulare Strukturen, Gassensoren, TiO2, NOx.
Event Title:ICAAC 2011
Event Location:Daytona, Florida, USA
Event Type:international Conference
Event Dates:23-28. Januar 2011
Organizer:The American Ceramic Society
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Turbine Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > High Temperature and Functional Coatings
Deposited By: Saruhan-Brings, Dr. Bilge
Deposited On:20 Oct 2011 17:29
Last Modified:20 Oct 2011 17:29

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