Photo-catalytic semiconducting composites were designed and tested in water splitting process for hydrogen generation/storage under visible light irradiation. Iron oxide NPs (5 wt%) were loaded onto Al (25 wt%)-modified SBA-15 supports via microwave-assisted (M) and ultrasonic-assisted (U) routes. Various Al-ِmodification methods of SBA-15 were applied, namely, impregnation post synthesis (Al/S_(Imp)), ultrasonic post synthesis (Al/S_(Us)) and in situ direct synthesis (Al/S_(Inst)). Several techniques were adopted to characterize the as-synthesized composites, viz., XRD, XRF, N₂ adsorption-desorption, FTIR, TPR, NH₃-TPD, H₂ chemisorption, TEM-EDS, DSC-TGA and UV abosorbance. The obtained results showed that all the studied catalysts are rather suitable candidates for H₂ storage with maximum capacity, referred probably to the fitting modifications in the pore system and the whole structure of the catalyst samples. The applied loading routes have led to different characteristics of the finished catalytic systems, where the ultrasonic-assisted loading route showed more prevailing behavior in the photo-catalytic splitting process.