Thermally stable mesoporous anatase TiO2 with high photocatalytic performance

Thermally stable mesoporous anatase TiO2 has been prepared using a nonionic block copolymer (Pluronic P-123) as surfactant via sol-gel method. Characterizat of the product was carried out by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetry differential scanning calorimetry (TG-DSC), Brunauer-Emmett-Teller (BET) surface areas, Barret-jiyner-halenda (BJH) pore size distribution analyses. These analyses showed that under controlled synthesis conditions, a wormlike mesostructured TiO2 with high surface area (110 m2g-1) is obtained. Moreover, the pore walls of the nanostructured TiO2 solid are formed by incipient crystallites of anatase, which is a significant achievement regarding its possible photocatalytic applications. The prepared photocatalyst has excellent photocatalytic efficiencies towards Congo Red azo dye removal.

کلیدواژه ها:

Mesostructure ، TiO2 ، Anatase ، Photochemical degradation