新規な光励起プロセスによる高感度可視光光触媒(<特集>太陽光利用技術:光触媒)

概要

論文の詳細を見る
Visible-light-sensitive Cu(II) or Fe(III) amorphous nanoclusters grafted TiO_2 have been developed based on the novel two concepts, i. e. interfacial charge transfer (IFCT) and multi-electron reduction process. Electrons in valence band of TiO_2 can be excited to the nanoclusters under visible light irradiation by IFCT process, then these electrons in nanoclusters cause an efficient reduction reaction of oxygen molecules. Visible light activities of the developed photocatalyst are much better than those of previously reported materials like nitrogen doped TiO_2. Developed photocatalysts exhibit various functions, such as air purification, self-cleaning, and anti-pathogenic properties even under indoor light illumination. Synthetic method for our Cu(II) or Fe(III) amorphous nanoclusters grafted TiO_2 is very simple and can be adapted for mass production at a low cost. We expect that our photocatalysts can be applied to various indoor scenes, such as private housings, office buildings, hospitals, airports, metro stations, schools, and so on.
2012-03-20