The high recombination rate of photogenerated charges is the main problem that limits the photocatalytic activity of semiconductor photocatalysts. Herein, we have reported novel heterojunctions of BiOBr-BiVO 4 fabricated by depositing BiOBr nanoflakes onto the surface of BiVO 4 . The optimum photocatalytic activity of the 0.925BiOBr-0.075BiVO 4 heterojunction was almost 14 and 144 times as high as those of individual BiOBr and BiVO 4 in visiblelight degradation of methylene blue. Photogenerated holes of BiVO 4 would play a dominant role in the photocatalytic system.
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