Photocatalytic activity of TiO2 nanowire arrays

Abstract Ordered anatase TiO 2 nanowire arrays have been successfully fabricated in the nanochannels of porous anodic alumina membrane by electrophoretic deposition. The as-grown materials were characterized by using scanning electron microscope and power X-ray diffraction. The photocatalysis activities of TiO 2 nanowire arrays were characterized by quantifying the degradation of Rhodamine B dye solution. Compared with TiO 2 nanowire arrays and thin film by using sol–gel deposition, higher photocatalytic activity of TiO 2 nanowire arrays by using electrophoretic deposition is obtained and mainly attributed to larger surface areas and greater energy gap.