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Pd-Doped TiO2 Nanofiber Networks for Gas Sensor Applications
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- Authors
- Jaehyun Moon, Jin-Ah Park, Su-Jae Lee, Taehyoung Zyung, Il-Doo Kim
- Issue Date
- 2010-08
- Citation
- Sensors and Actuators B : Chemical, v.149, no.1, pp.301-305
- ISSN
- 0925-4005
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- This work presents a new route to enhance the sensitivity of nanocrystalline TiO2 fibers based gas sensors. Pure and Pd-doped TiO2 nanofiber mats were synthesized by electrospinning and subsequent calcination. Highly porous fibrillar morphology was observed in the resultant nanocrystalline TiO2 fibers. In addition to anatase TiO2 crystallites, tiny (~2 nm) PdO crystallites were observed in the Pd-doped TiO2 fibers. The sensors using Pd-doped TiO2 fibers showed promising gas sensing characteristics, such as low operation temperature (180 °C) and sufficient gas response (R/Ro = 38 to 2.1 ppm NO2). The techniques outlined here offer new means for preparing novel metal-oxide nanofibers with catalytic dopants. © 2010 Elsevier B.V. All rights reserved.
- KSP Keywords
- Fibrillar morphology, Gas response, Gas sensing, Gas sensor applications, Highly porous, Metal-oxide(MOX), Operation temperature, Pd-doped, TiO2 fibers, nanofiber mat, nanofiber networks