Boosted photoinduced cathodic protection performance of ZnIn2S4/TiO2 nanoflowerbush with efficient photoelectric conversion in NaCl solution

•ZnIn2S4/TiO2 nanoflowerbush photoanode was prepared by facile hydrothermal method.•The nanoflower-like ZnIn2S4 was tightly incorporated on ultrafine branched TiO2 NB.•The heterojunction greatly promotes the transfer of the photogenerated carriers.•ZnIn2S4/TiO2 NFB exhibits photoinduced CP performance for metals in NaCl solution.