GAO Hongtao, LIU Yuanyuan. Preparation and Characterization of La-CdS/TiO2 Photocatalyst[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2011,50(1):85-88.
GAO Hongtao, LIU Yuanyuan. Preparation and Characterization of La-CdS/TiO2 Photocatalyst[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2011,50(1):85-88.DOI:
The La-CdS/TiO2 photocatalysts were prepared using hydrothermal method by metal doping coupled with semiconductor composite method. The products were characterized by SEM
XRD and UVvisible DRS
respectively. The photocatalytic performances of samples were studied on the degradation of methyl orange (MO). It was found that the absorption of La-CdS/TiO2 enhanced significantly
both in ultraviolet and visible light region. And the absorption edge was 452 nm
which shifted to the low energies (visible light region). Compared to bare TiO2
La doping reduced combination rates of the electronhole pairs and the coupled of CdS improved the response of TiO2 to visible light
which resulted in the optical response enhancement. After being irradiated for 15 minutes
the degradation rate on MO for the La-CdS/TiO2 catalyst almost reached 99%.