2024-03-29T10:50:23Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00018005
2022-12-14T04:12:48Z
1221:1222
Photoelectrochemical properties of dye-dispersing allophane-titania composite electrodes
Nishikiori, Hiromasa
Kanada, Naohiro
Setiawan, Rudi Agus
Morita, Koji
Teshima, Katsuya
Fujii, Tsuneo
Allophane
Titania
Fluorescein
Photoelectrochemistry
Electron injection
Dye-dispersing allophane-titania composite electrodes were prepared from titanium alkoxide sols containing dye and allophane. The photoelectric conversion properties of the electrodes were investigated by photoelectrochemical measurements. The photocurrent values in the UV range decreased with an increase in the allophane content, whereas those in the visible range were increased by adding 1.0% (Al/Ti ratio) allophane. As a small amount of allophane nanoparticles were highly dispersed in the titania electrodes, the dye molecules were dispersed in the electrodes without decreasing the efficiency of the electron injection from the dye to the titania conduction band. The dye molecules dispersed on the titania nanoparticle surface were capped with allophane nanoparticles which prevented desorption. The dye molecules strongly interacted with the titania nanoparticle surface and efficiently injected the excited electrons into the titania conduction band. (C) 2015 Elsevier B.V. All rights reserved.
Article
APPLIED CLAY SCIENCE. 107:138-144 (2015)
journal article
ELSEVIER SCIENCE BV
2015-04
application/pdf
APPLIED CLAY SCIENCE
107
138
144
0169-1317
AA10428043
https://soar-ir.repo.nii.ac.jp/record/18005/files/Photoelectrochemical_properties_dye-dispersing_allophane.pdf
eng
10.1016/j.clay.2015.01.015
https://doi.org/10.1016/j.clay.2015.01.015
Copyright © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/