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In recent a few years,lots of studies are intensively focusing on the activityimprovement of TiO2 by high-percentage {001} facets.[1] To the best of our knowledge,however,almost no comprehensive research reports the surface effect of TiO2 on the stability of the TiO2-based composites photocatalysts.Herein,CuO/TiO2 composites were prepared by the impregnation method,in whichTiO2 nanosheets and nanorods are used as the precursors,respectively.We investigated theeffect of the TiO2 surface structure on the activity and recyclability of the photocatalysts.The hydrogen production activities were tested in a 3 molL-1 methanol aqueous solutionunder UV-light irradiation.After deposition of Pt,both Pt@CuO/TiO2 samples displayedhigher hydrogen production activities than the Pt/TiO2 samples.The results reveal that the TiO2 sheet-based samples display higher hydrogenproduction activities and stability than the TiO2 rod-based ones.It is proposed that a morestable p–n heterojunction form at the interface between CuO and TiO2 nanosheets owing tothe strong interaction of CuO with the {001} facets of the TiO2 nanosheets,whichsignificantly refrains the recombination rate of electrons and holes.