Electrodeposition and anodization of Al-TiO2 composite coatings for enhanced photocatalytic activity

• 三宅, 正男

  Graduate School of Energy Science, Kyoto University

• 平藤, 哲司

  Graduate School of Energy Science, Kyoto University

• Hirato, Tetsuji

  Graduate School of Energy Science, Kyoto University

抄録

In this study, we investigated the feasibility of a new process for the fabrication of Al-based composite coatings containing TiO₂ particles with high photocatalytic activity. In the first step of this process, Al-TiO₂ composite coatings were electrodeposited in a dimethyl sulfone-aluminum chloride bath with suspended TiO₂ particles yielding Al-matrix composite coatings with uniformly dispersed TiO₂ particles. Subsequently, the electrodeposited Al-TiO₂ composite coatings were anodized in oxalic aqueous solution. Through this anodization step, the Al matrix was converted into an alumina layer with many nanopores extending from the surface of the coating toward the substrate. As a consequence, a porous alumina layer supporting TiO₂ particles was formed. The photocatalytic activity of the anodized composite coatings was confirmed to be higher than that of the as-deposited coatings.

収録刊行物

• International Journal of Electrochemical Science

  International Journal of Electrochemical Science 12 (3), 2344-2352, 2017-03

  Electrochemical Science Group

キーワード

• composite electrodeposition
• composite electroplating
• aluminum electrodeposition
• anodization
• photocatalyst

詳細情報

• CRID: 1050001338209065600
• NII論文ID: 120006542003
• ISSN: 14523981
• HANDLE: 2433/235490
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles