Two Cu-Mo-Fe-Ox samples,which can store and supply pure hydrogen through repeated redox reaction (Fe3O4+4H2(→)3Fe+4H2O),were prepared by co-precipitation (FCM-C) and impregnation (FCM-I) methods,respectively,and the performance of hydrogen production from water were investigated.Compared with the impregnated sample,the co-precipitation sample presented better catalytic activity.The samples were characterized by X-ray diffraction (XRD),field emission scanning electron microscopy (FE-SEM),X-ray photoelectron spectroscopy (XPS),Fourier transform infrared spectroscopy (FT-IR) and temperature-programmed reduction (H2-TPR) techniques.XRD,FE-SEM and XPS results suggest that the FCM-C sample has smaller particle size and higher dispersion of iron oxide than that of FCM-I sample.In addition,FT-IR and H2-TPR analyses indicate that the weak interaction among metal oxides in FCM-C sample may induce facile reduction of active metal and superior property of hydrogen production by decomposing water in succession.