Heterostructured photocatalysts play a significant role in the removal of contaminants by decreasing the recombination of the photo-induced charges. Herein, we presented novel TiO/C/BiVO ternary hybrids employing a 2D layered TiC MXene precursor, overcoming the lattice mismatching of TiO/BiVO binary heterostructures simultaneously. Raman and XPS analyses proved the strong coupling effects of TiO, carbon and BiVO components, and the heterostructures were identified from high-resolution transmission electron microscopy results. Moreover, the ternary TiO/C/BiVO composites exhibit excellent photocatalytic performance of Rhodamine B degradation, which is about four times higher than pure BiVO and twice that of binary TiO/BiVO heterostructures, reaching a reaction constant of 13.7 × 10 min under visible-light irradiation (λ > 420 nm). In addition, for the possible mechanism for dye elimination it was proposed that RhB molecule be directly oxidized by photo-induced holes (h) on the BiVO components and superoxide radical ([Formula: see text]) generated from conduction band electrons of the heterostructures. This work will provide possibilities for developing visible-light responsive nanomaterials for efficient solar utilization.
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