Influences of HCl Concentration on Structure and Photocatalysed Performances of TiO2 Nanotubes

Abstract

TiO2 nanotubes had been prepared by hydrothermal method, and the Influences of HCl concentration on its structure and photocatalysed performances have been researched in detail in this paper. The structures and morphologies of TiO2 nanotubes were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM) respectively. The photocatalytic behavior was examined by degradation of methyl orange dyes. The results show the prepared samples present good nanotube shape with diameter 20–40 nm and length 400–800 nm. The HCl concentration have important role on the structure and photocatalysed performances of TiO2 nanotubes. The sample handled by 0.01 mol/L HCl during synthesis exhibits the best structure and photocatalytic activity compared with the samples handled by 0.1 and 0.001 mol/L HCl during synthesis.