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Ti O_2-CdS composite material was successfully synthesized in-situ sulfidation using polystyrene(PS)as a template,tetrabutyl titanate as a titanium source,and cadmium acetate as a precursor,by sol-gel method and hydrothermal method.The effects of different molar ratios of metal sulfides on the morphology,structure,absorptivity and photocatalytic hydrogen evolution of the materials were studied.The structure and morphology of the composites were analyzed by X-ray powder diffraction(XRD)and field emission scanning electron microscopy(SEM).The UV-Vis was used to compare the absorbing performance.Specific surface area and pore size were characterized by specific surface area and porosity analyzer(BET).Electrochemical workstations were used to test their electrical performance.Experiments sh