具有丰富(001)面的锐钛矿TiO 2 晶体的无氟合成

Abstract Controllable syntheses of anatase TiO 2 rich in (001) facets have attracted much attention because of the excellent photocatalytic activity of this material in dye degradation. These syntheses are normally performed in the presence of fluoride, which is environmentally unfriendly. In this study, anatase TiO 2 crystals rich in (001) facets were successfully synthesized in the presence of a cationic polymer and characterized using X-ray diffraction, scanning electron and transmission electron microscopies, and ultraviolet-visible spectroscopy. Photocatalytic tests showed that this material is very active in the degradation of methyl orange compared with conventional anatase TiO 2 crystals and a commercial P25 photocatalyst. The high activity is attributed to the rich (001) facets translation.