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BiOBr-sensitized K2La2Ti3O10 composite photocatalysts(BiOBr/K2La2Ti3O10)were fabricated by depositing BiOBr particles on the surface of K2La2Ti3O10through a solvothermal method.The deposited BiOBr particles,with a uniform size of approximately 50 nm,were well dispersed on the surface of K2La2Ti3O10,and improved the visible light absorption of the composite material.The photocatalytic activities were evaluated by degradingRhodamine B(RhB)under visible light irradiation.The BiOBr/K2La2Ti3O10 composites were found toexhibit superior performance to pure BiOBr,andthe deposition of BiOBrparticlesonto the host K2La2Ti3O10significantly increased thephotocatalytic decolorization ability of K2La2Ti3O10.An optimum loading was found to be45 wt.%,and almost 95%of RhB could be degraded in 60 minutes under visible light irradiation using this prepartion.Furthermore,the photocatalytic activity was stable in up to five consecutive runs.The enhancement inboth photocatalytic activity and stability in the composites resulted from the closely contacted interfaces,which were beneficial for electron and holes separation.The role of the radical species was investigated,and the·O2-and h+werethought to dominate the photocatalytic process,while the role of ·OH was found to be relatively negligible.Based on the experimental results,a photocatalytic mechanism for organics degradation over BiOBr/K2La2Ti3O10 photocatalysts was proposed.