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Morphological control of anodic crystalline TiO2 nanochannel films for use in size-selective photocatalytic decomposition of organic molecules

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/56743

Title: Morphological control of anodic crystalline TiO2 nanochannel films for use in size-selective photocatalytic decomposition of organic molecules
Authors: Tsuji, Etsushi Browse this author →KAKEN DB
Taguchi, Y. Browse this author
Aoki, Y. Browse this author
Hashimoto, T. Browse this author
Skeldon, P. Browse this author
Thompson, G. E. Browse this author
Habazaki, H. Browse this author →KAKEN DB
Keywords: Anodizing
TiO2 nanochannel films
Size-selective photocatalysis
Photocatalyst
Issue Date: 15-May-2014
Publisher: Elsevier
Journal Title: Applied Surface Science
Volume: 301
Start Page: 500
End Page: 507
Publisher DOI: 10.1016/j.apsusc.2014.02.113
Abstract: We report the size-selective photocatalytic decomposition of organic molecules using crystalline anodic TiO2 nanochannel films as the photocatalyst. The porous TiO2 films were formed by anodizing titanium at 20 V in glycerol electrolyte containing various amounts of K3PO4, K2HPO4, and KH2PO4 at 433K. Regardless of the electrolyte composition, the as-formed TiO2 films had a crystalline anatase structure. The basicity of the electrolyte markedly influenced the morphology of the TiO2 nanochannel films; more regular nanochannels developed with increasing basicity of the electrolyte. Because the diameter of the nanochannels in the films formed in a basic electrolyte was as small as similar to 10 nm, the anodic TiO2 nanochannel films with a thickness of 5 mu m revealed a selective photocatalytic decomposition of methylene blue (MB) in a mixture of MB and direct red 80 (DR) kept under UV irradiation. The importance of the diameter of the nanochannels and their uniformity for size-selective decomposition of organic molecules were investigated.
Type: article (author version)
URI: http://hdl.handle.net/2115/56743
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 辻 悦司

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