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PIRCについて

About PIRC

The field of photocatalysis can be traced back more than 80 years to early observations of the chalking of TiO2-based paints and to studies of the darkening of metal oxides in contact with organic compounds in sunlight. During the past 20 years, it has become an extremely well researched field due to practical interest in air and water remediation, self-cleaning surfaces, and self-sterilizing surfaces. During the same period, there has also been a strong effort to use photocatalysis for light-assisted production of hydrogen. The fundamental aspects of photocatalysis on the most studied photocatalyst, TiO2, are still being actively researched and have recently become quite well understood. The mechanisms by which certain types of organic compounds are decomposed completely to carbon dioxide and water, for example, have been delineated. However, certain aspects such as the photoinduced wetting phenomenon, remain controversial, with some groups maintaining that the effect is a simple one in which organic contaminants are decomposed, while other groups maintain that there are additional effects in which the intrinsic surface properties are modified by light. During the past several years, powerful tools such as surface spectroscopic techniques and scanning probe techniques performed on single crystals in ultrahigh vacuum, and ultrafast pulsed laser spectroscopic techniques have been brought to bear on these problems, and new insights have become possible. Quantum chemical calculations have also provided new insights. New materials have recently been developed based on TiO2, and the sensitivity to visible light has improved. In the Photocatalysis International Research Center, we will develop fundamental and applied research of the photocatalysis.

Major Research Projects in PIRC

■ Self cleaning unit

This unit develops products whit self-cleaning and/or antibactaterial surfaces including window sheet glasses and ceramic tiles.This unit also develops siple manufacturing processes for the production of unique surfaces, where photocatalytic self-cleaning and antibacterial properties are combined.

■ Artificial photosynthesis unit

This unit devlops advanced functional nanostructured visible-light-driven photocatalysts for H2 generation through water splitting, CO2 fixation, and green synthesis of organic compounds.

■ Environmental cleanup unit

This unit attemts to enhance the use of photocatalysts for water and air pollution control, visible light responsive modified-TiO2 and non-TiO2 based materials for environmental and energy applications,and the imporance of developing reaction mechanism for a comprehensive understanding and design of the processes.

Applications of TiO2 photocatalysis

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