首页|Preparation and Characterization of Pd-Based Optical Hydrogen Sensor Operated at Room Temperature by Using Photodeposition Process

Preparation and Characterization of Pd-Based Optical Hydrogen Sensor Operated at Room Temperature by Using Photodeposition Process

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  • NETL
  • NSTL
  • Trans Tech Publications Ltd
Palladium (Pd) nanoparticles were prepared on photocatalytic TiO_2-coated glass substrate by a photodeposition process and the optical hydrogen sensing properties were examined at room temperature. The TiO_2 coatings were prepared on a non-alkaline glass substrate by a sol-gel process and hot water treatment. Pd nanoparticles were deposited on the TiO_2 film by photodeposition using UV light. The obtained Pd/TiO_2 thin film showed remarkable optical transmittance response to hydrogen gas at room temperature. The normalized transmittance of the Pd/TiO_2 thin film at a wavelength of 640 nm decreased to 0.9 on exposing the film to hydrogen gas for only 5 s. This transmittance decrease is considered to be due to a gaschromic effect of the TiO_2 photocatalytic coating.

palladium nanoparticlesphotodepositiontitania filmsol-gelhot water treatmentoptical hydrogen sensor

Jun-ichi Hamagami、Ryo Araki、Hiroyuki Oda、Mototsugu Sakai、Atsunori Matsuda

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Department of Materials Science, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan

Department of Materials Science and Engineering, Kurume National College of Technology 1-1-1 Komorino, Kurume, Fukuoka 830-8555, Japan

2010

10.4028/www.scientific.net/KEM.445.100

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.445
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