Photo-functionalized materials using nanoparticles: Photocatalysis

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Abstract

Among photo-functionalized materials, photocatalysts in particular have been researched and developed by many researchers in various fields. After the discovery of the Honda-Fujishima effect, their effectiveness became apparent, not only in water decomposition but also in sanitation and purification of the environment, for example, through antibacterial, self-cleaning, and deodorizing effects as well as NOx removal. Recently, novel nano-size photocatalysts, with performance superior to that of conventional types, have been developed, and examples include nitrogen-doped photocatalysts responsive to visible light and brookite-type photocatalysts with higher photocatalytic activity. Moreover, when applying a photocatalyst, it must be fixed to a substrate and blocking of the latter avoided. When photocatalysts with high photocatalytic performance are fixed to plastics, papers and textiles, the substrate can be decomposed and may be prone to peel offwhen exposed to irradiation with light, owing to the oxidation action of the photocatalysts. To prevent damage to the substrate resulting from photocatalytic oxidation, we have developed a photocatalyst whose particles are coated with inorganic compounds that can be blended with organic substances.

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APA

Mori, K. (2005). Photo-functionalized materials using nanoparticles: Photocatalysis. KONA Powder and Particle Journal, 23(March), 205–214. https://doi.org/10.14356/kona.2005023

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