Visible Light Photocatalytic Activity of C, N, S-Tridoped Anatase TiO2 Nanosheets
The C, N, S-tridoped TiO2nanosheets are synthesized via hydrothermal synthesis and post-treatment, and characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS), and UV–vis diffuse reflectance spectroscopy. The UV-diffuse reflectance spectra of all the C, N, S-tridoped TiO2nanosheets greatly extends the absorption edge into the visible light region, which can be attributed to C, N, S-tridoping in the form of cation C-doping, interstitial N-doping, anionic S-doping, and adsorbed SO42-ions states. The C, N, S-tridoped TiO2nanosheets exhibits high visible light photocatalytic activity, and the xanthate concentration reduce as much as 100% in 120 min. All these indicate that C, N, S-tridoped TiO2nanosheets photocatalysts are promising visible light photocatalyst for the practical application.