Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 69: Issue 3
Photothermal characterization of highly porous, polycrystalline TiO2 electrodes fabricated by chemical synthesis
Authors:
T. Toyoda The University of Electro-Communications Department of Applied Physics and Chemistry 1-5-1 Chofugaoka Chofu, Tokyo 182-8585 Japan 1-5-1 Chofugaoka Chofu, Tokyo 182-8585 Japan

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M. Hayashi The University of Electro-Communications Department of Applied Physics and Chemistry 1-5-1 Chofugaoka Chofu, Tokyo 182-8585 Japan 1-5-1 Chofugaoka Chofu, Tokyo 182-8585 Japan

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J. Sato The University of Electro-Communications Department of Applied Physics and Chemistry 1-5-1 Chofugaoka Chofu, Tokyo 182-8585 Japan 1-5-1 Chofugaoka Chofu, Tokyo 182-8585 Japan

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Q. Shen The University of Electro-Communications Department of Applied Physics and Chemistry 1-5-1 Chofugaoka Chofu, Tokyo 182-8585 Japan 1-5-1 Chofugaoka Chofu, Tokyo 182-8585 Japan

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Pages:
1037–1044
Online Publication Date:
02 Nov 2004
Publication Date:
01 Jul 2002
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1020653300144
Keywords:
chemically synthesized TiO2 films; photoacoustic spectroscopy; porous electrode; photothermal effect; anatase-type TiO2 films; photoelectrochemical current spectroscopy
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Abstract  

We report the optical absorption characteristics of highly porous, polycrystalline TiO2electrodes and the influence of hydrolysis period for the preparation processes by photoacoustic (PA) spectroscopy together with photoelectrochemical (PEC) current ones. The PA spectra show peaks which are attributed to the lowest transition energy due to the quantum confinement effect. The peak intensity decreases with the increase of hydrolysis periods, indicating the possibilities of the changes in the thermal properties and the densities due to hydrolysis processes. The PEC spectra indicate that the photocurrent intensity also show peak and that of the longer hydrolysis periods is somewhat smaller than others, indicating the increase of interface states due to the formation of grain boundaries with the increase of hydrolysis processes.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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