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The nanostructures of noble metals(mainly silver and gold)have recently shown significant promise in harvesting photon energy for chemical reactions due to their extraordinary localized surface plasmon resonance(LSPR)properties.[1]On the other hand,mesoporous metal-oxide(MMO)semiconductors have been attracted extensive attention as catalysts,due to their large surface area,high pore volumes,and ease of functionalization.[2,3]Therefore,incorporating plasmonic metal nanoparticles into MMO semiconductors can achieve collective effect to greatly increase the efficiency of photocatalytic chemical processes,due to the plasmonic enhancement of light absorption and/or plasmonic sensitization to semiconductor.[4,5]Herein,several typical MMO(TiO2,ZnO,and CeO2)are synthesized via a general method assisted with evaporation-induced surfactant assembly.Then,different amounts of Ag nanoparticles(i.e.1 wt.%,2 wt.%,and 5 wt.%)were loaded in these MMO materials via a facile photodeposition process.The compostions,microstructures and light absorption of the as-prepared Ag/MMO composites were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,N2 adsorption-desorption isotherms,UV-vis absorption spectrum,X-ray photoelectron spectrum.These Ag/MMO composites were used as photocatalysts to degrade methylene blue(MB)and phenol(PhOH)in aqueous solution under simulated solar irradiation.Experimental results indicated that Ag-loaded MMO displayed better photocatalytic activity than pure MMO due to the synergistic effect between UV light excitation and surface plasmon resonance enhancement,and the mesoporous TiO2 with higher Ag-loading amount(~5 wt.%)exhibited the best photocatalytic performance for photodegrading both MB and PhOH.