Preparation of CdS-K2La2Ti3-xPbxO10 and Its Photocatalytic Property

K2La2Ti3-xPbxO10 powder was synthesized via a stearic acid method. CdS-intercalated K2La2Ti3-xPbxO10 composite photocatalysts were synthesized via ion-exchange reaction, butylamine pillaring and sulfuration processes under the assistance of the microwave irradiation (designated as CdS-K2La2Ti3-xPbxO10). The photocatalysts were determined by X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray energy dispersive spectroscope (EDS), ultraviolet-visible diffuse reflection spectra (UV-Vis), X-ray photoelectron spectroscopy (XPS), and photoluminescence measurement (PL). The photocatalytic activities of CdS-K2La2Ti3-xPbxO10 for hydrogen production were also investigated under UV and visible light irradiation. The results reveal that the Pb ions doping and CdS-intercalated K2La2Ti3-xPbxO10 photocatalysts can widen the range of absorb visible light and greatly enhances the photocatalytic activity. The photocatalytic activities for hydrogen production of the CdS-intercalated K2La2Ti3-xPbxO10 prepared via a microwave assisted procedure are 230.15 and 3.35 mmol/(g cat) under UV light and visible light irradiation, respectively, after 3 h irradiation. The mechanism photocatalysis is deduced as well.