SnS2- BiOCl空心球的制备及其光催化性能研究

he doping effect of a totally new dopant to BiOCl as photocatalyst is studied. SnS2 as a narrow-band-gap semiconductor is used to tune the electronic and band structure of wide-band-gap BiOCl. SnS2-incorporated BiOCl hollow spheres (SBHSs) are synthesized by a facile and economic one-pot hydrothermal method. All elements disperse uniformly through out the hollow spheres. The shell of the SBHSs is composed by BiOCl and SnS2, but the outermost layer is BiOCl. SBHSs exhibits much higher photocatalytic activity than pure SnS2 and BiOCl in the degradation of Rhodamine-B under visible light and sun-light irradiation. The improvement is explained by the band structure tuning effect from SnS2 and the morphological benefits of the hollow sphere structure.