Tohoku Univ. Technology : Rutile titanium dioxide photocatalyst : T07-233_T09-030
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Titanium dioxide thin film excellent in photocatalytic performance and hydrophilicity can be produced at low cost and convenience
Practical titanium dioxide photocatalysts often use powder as a raw material, and immobilization and adhesion to substrates have been problems for industrial use. Moreover, although titanium dioxide is active in ultraviolet light, its lack of activity in natural light such as sunlight has been a long-standing The present invention relates to a technique for producing a rutile-type titanium dioxide thin film using an anodization method, which enables the creation of a thin film with high adhesion ability that combines photocatalytic performance and superhydrophilicity at a relatively low cost (right table). The thin film exhibits photocatalytic activity not only in ultraviolet light but also in visible light (Figure 1). In addition, water droplets are completely wetted and spread on the surface of the thin film after 0.005 seconds under visible light as well as ultraviolet irradiation, confirming the high speed wettability equivalent to that of "ink jet printer paper with excellent permeability" (Figure 2).
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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