Enhancing the Photocatalytic Performance of BaSn-based Composites by Doping Rare Metals

Rare metal (La or Nd) doped BaSn-based composites with highly polycrystalline nature were successfully synthesized through a simple hydrothermal route. The investigated by X-ray diffraction, electron microscopy, solid ultraviolet diffuse reflectance spectrum, photoelectron spectroscopy, photoluminescence, electrochemical impedance and photocatalytic measurements. La Nd doping induces the morphological change of from nanorods to irregular nanoscale particles average size about 100 nm. in exist form cubic La2Sn2O7 Nd2Sn2O7 phases. absorption edge red-shifts comparing that non-doped composites. mass ratio 8 wt% possess smallest band-gap energy good light ability. has an important role degradation crystal violet (CV) dye. CV molecules 20-mL solution 10 mg L−1 can be totally removed 20-mg La- Nd-doped under irradiation for 150 min. Scavenger experiments show hydroxyl free radicals (·OH) superoxide anion (·O2−) are effective oxidizing agents degradation. Photoluminescence spectroscopy significant decrease recombination ability hole pairs rare is great importance enhancing activity reusability