Fig. 2: Synthetic strategy and morphology characterization.

a Schematic illustration for the synthesis of TiO2/MoSx-Au by the initial lactic acid-induced MoSx deposition on the TiO2 surface and subsequent S-induced selective photodeposition of Au cocatalyst onto the MoSx surface. b, c TEM, d HRTEM, e, f HAADF-STEM, and g–l elemental mapping pictures of TiO2/MoSx-Au photocatalyst.