Construction of SrTiO-BiOCl composite catalyst via facial microwave hydrothermal for highly efficient photocatalytic activity towards organic compounds degradation.

This work mainly focuses on the preparation and performance study of SrTiO-BiOCl composite photocatalysis. The SrTiO-BiOCl photocatalysts are prepared via the facial microwave hydrothermal method. XRD, UV- DRS, SEM, TEM, XPS, N adsorption and desorption isothermal experiment, FT-IR, and PL are applied to characterize the prepared samples. The spherical particles of SrTiO grow on the flaky BiOCl, and the crystal size is uniform and evenly disperses on the BiOCl. The catalytic performance of the samples was evaluated over the degradation rates of methylene blue(MB). Typically, the clearance rates of MB reached to 99.65% over SrTiO-BiOCl-50% under visible light, which was much higher than that of SrTiO and BiOCl (55.86%, 79.79%, respectively). The active species capturing experiments and ESR showed that the holes (h) and ·OH are playing the main roles in the degradation process.