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Disk- and filament-like ZnO crystals were decorated on one-dimensional TiO₂ nanostructures (TiO₂–ZnO) through various integrated physical and chemical synthesis methods. The morphology of the ZnO crystals on TiO₂ varied with the chemical synthesis method used. ZnO nanodisks decorated with TiO₂ nanorods (TiO₂–ZnO–C) were synthesized using the chemical bath deposition method, and ZnO filament-like crystals decorated with TiO₂ nanorods (TiO₂–ZnO–H) were synthesized through the hydrothermal method. Compared with the pristine TiO₂ nanorods, the as-synthesized TiO₂–ZnO composites exhibited enhanced photophysiochemical performance. Furthermore, because of their fast electron transportation and abundant surface active sites, the ZnO nanodisks in the TiO₂–ZnO–C composite exhibited a higher photoactivity than those in the TiO₂–ZnO–H composite. The morphology and crystal quality of the ZnO decoration layer were manipulated using different synthesis methods to realize disk- or filament-like ZnO-decorated TiO₂ composites with various photoactive performance levels.