journal article·2014Open access

Synergistic effect between TiO2 and ubiquitous metal oxides on photocatalytic activity of composite nanostructures

Ivan TURKEVYCH, Sofia KOSAR, Yuriy PIHOSH, Kazuma MAWATARI, Takehiko KITAMORI, Jinhua YE, Kiyoshi SHIMAMURA

Journal of the Ceramic Society of Japan· Volume 122· Issue 1426

Abstract

We studied photocatalytic activity of highly porous nanotubular TiO2 films modified with nanoclusters of ubiquitous metal (Ti, Al, Zn, Sn, Cu, W) oxides prepared by chemical bath deposition and atomic layer deposition as well as nanoclusters of metal rich suboxides and mixed titania suboxides prepared by atomic layer deposition by following decomposition of methylene blue under simulated solar light. The mixed titania suboxide clusters constructed on the surface of TiO2 nanotubes by atomic layer deposition demonstrated significantly enhanced photocatalytic activity in comparison to the naked TiO2 nanotubes attributed to the better absorption of visible light due to the upward shift of the valence band near the TiO2 surface induced by the suboxide clusters that feature low valence states and metal-metal bonds.
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Research context

OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

National Institute for Materials Science

Faculty of Physics of the Chernivtsy National University

Department of Applied Chemistry, The University of Tokyo

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