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Morphological control of anodic crystalline TiO2 nanochannel films for use in size-selective photocatalytic decomposition of organic molecules
| 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)
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Submitter: 辻 悦司
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