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heterojunction photocatalysts were successfully prepared by a facile, one-pot solvothermal method. In the obtained heterojunctions, Bi 4 V 2 O 11 nanoparticles were uniformly immobilized on or inlaid onto the surfaces of the Bi 24 O 31 Br 10 nanosheets. They exhibited superior visible light photocatalytic activity towards the degradation of rhodamine B (RhB). Among them, the 25% Bi 4 V 2 O 11 sample possessed the highest photocatalytic activity, the degradation rate of which was 4 and 6 times as fast as that of bare Bi 24 O 31 Br 10 and Bi 4 V 2 O 11 , respectively. The enhanced photocatalytic activity could be attributed to the effective separation and transfer of photogenerated carriers. The trapping experiments confirmed that the photogenerated holes and cO 2 À radicals were the main active species responsible for the photodegradation of RhB.

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