TiO2　photocatalysis　has　been　studied　widely　in　environment　protection　and　energy　generation　applications.　But,　the　intrinsic　absence　of　visible　light　response　and　the　high　recombination　rate　of　photo-generated　charge　carriers　significantly　limited　the　efficiency　of　photocatalysis　with　TiO2　materials.　Herein,　a　facile　approach　was　constructed　to　develop　visible-light-induced　TiO2　photocatalysis　by　co-modification　with　Eu　and　Au　nanoparticles.　The　synthesized　Au/Eu-TiO2　material　was　characterized　by　XRD,　SEM,　TEM,　DRS,　XPS,　and　N2　adsorption　measurements.　Visible　light　catalytic　performance　of　the　Au/Eu-TiO2　catalyst　was　evaluated　by　using　the　photodegradation　of　RhB　as　a　model　reaction.　It　was　shown　that　this　Au/Eu-TiO2　exhibited　a　better　photocatalytic　activity　than　the　single　Au　modified　TiO2　(Au/TiO2)　or　the　single　Eu　modified　TiO2　catalyst　(Eu/TiO2),　and　also　exhibited　a　good　reusability　for　the　targeted　reaction.　This　remarkably　improved　performance　of　Au/Eu-TiO2　could　be　attributed　to　the　synergetic　effect　of　Eu　and　Au　co-decoration,　which　not　only　enhanced　visible　light　absorption　but　also　promoted　charge　carriers　transfers　as　evidenced　by　DRS,　XPS　and　transient　photocurrent　spectra.　Moreover,　a　possible　reaction　mechanism　for　the　Au/Eu-TiO2　photocatalysis　was　proposed.　©　2018　Elsevier　Masson　SAS