Degradation of methylene blue and methyl orange by palladium-doped TiO2 photocatalysis for water reuse: Efficiency and degradation pathways

Electronic properties of rutile TiO2 doped with 4d transition metals: First-principles study

Nano-sized yttrium (Y)-doped TiO2 with different Y doping concentrations has been synthesized by hydrothermal method. With pure anatase phase, the as-synthesized samples possess good crystallinity and spherical morphology with uniform particle size distribution. Y doping shifted the absorption edge of TiO2 towards visible light region, as observed from the UV–vis. absorption spectra. XPS (X-ray photoelectron spectroscopy) analysis indicates that Y3+ replaces lattice Ti4+ leading to substitutional point defects. The photocatalytic activity of the synthesized sample was evaluated by the degradation of methylene blue in aqueous solution under visible light irradiations. Y-doped TiO2 shows enhanced photocatalytic activity compared with that of bare TiO2. Compensated and non-compensated density functional theory based calculations were performed for reasonable explanation of the experimental findings. Compensated model with Y3+ replacing Ti4+ along with concomitant presence of an oxygen vacancy might explain the improved photocatalytic activity of Y-doped TiO2. The enhanced photoactivity of Y-doped TiO2 is assigned to the reduced band gap, enhanced visible light absorption and improved separation of electron–hole pairs.

Preparation of Y-doped TiO2 by hydrothermal method and investigation of its visible light photocatalytic activity by the degradation of methylene blue

Visible light activated photocatalytic behaviour of rare earth modified commercial TiO2

Visible light responsive sulfated rare earth doped TiO2@fumed SiO2 composites with mesoporosity: Enhanced photocatalytic activity for methyl orange degradation

Huihui Chu

Papers

Preparation, characterization of Y3+-doped TiO2 nanoparticles and their photocatalytic activities for methyl orange degradation