ゾル-ゲル法を利用する酸化チタン光触媒の高活性化
山崎鈴子
光化学, 2015, 46, 66-73.

Abstract: Degradation of various pollutants by photocatalysis has been widely studied over the last 30 years. Titanium dioxide is still the widely used photocatalyst for environmental remediation because there is no satisfactory alternative. Sol-gel method is efficient for tailoring nanostructure materials with high specific surface area without the need for using expensive equipment. We have developed a synthetic method to prepare porous TiO2 with BET surface area higher than 200 m2 g-1 by using water as solvent and conducting dialysis in the sol-gel method. Recently, many attempts have been devoted to enhance the photocatalytic activity of TiO2 by extending its spectral response to visible light and/or suppressing the recombination of the photogenerated hole and electron. In this review, the preparation of metal-ion-doped TiO2 working under visible light by conducting dialysis in the sol-gel method and enhancement of the photocatalytic activity obtained by mixing TiO2 and WO3 sol are prepared.