A CdS/MoS2 heterojunction with uniform loading of CdS nanoparticles, porous structure, and controllable heterojunction surface was synthesized from a core–shell MoS2@Cd-MOF precursor and exhibited a high photocatalytic H2 evolution rate.

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BiVO 4 is widely used for photoelectrochemistry and photocatalytic oxygen evolution under visible-light irradiation. To extend the range of visible-light absorption and reduce the recombination rate of photoexcited electrons and holes, a BiVO 4 sheet−Bi 2 S 3 nanowire heterostructure was fabricated through an easy in situ hydrothermal method. In this method, Bi 2 S 3 nanowires were uniformly coated onto the surface of BiVO 4 sheets. The heterostructure exhibits a wide visible-light absorption band ranging from 525 to 900 nm after coupling with Bi 2 S 3 nanowires. The BiVO 4 sheet−Bi 2 S 3 nanowire heterostructures were used for photoelectrochemical measurements and exhibited higher photocurrent intensity than those of BiVO 4 sheets and BiVO 4 particle−Bi 2 S 3 under visible-light irradiation. The optimized amount of Bi 2 S 3 in the heterostructure was approximately 2.4 at. %. The remarkable enhancements in the photoelectrochemical property were attributed mainly to the solid sensitization of Bi 2 S 3 nanowires providing a number of photoexcited electrons, shortening transport distance in BiVO 4 sheets, smoothening migration along Bi 2 S 3 nanowires, and enhancing the synergistic effect between BiVO 4 and Bi 2 S 3 .

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