A　highly　effective　Iron　Metal-Framework　photocatalyst　(MIL-68(Fe))　has　been　successfully　prepared　via　a　facile　solvothermal　method　under　acidic　condition.　The　UVvis　diffuse　reflectance　spectrum　reveals　that　the　absorption　edge　of　MIL-68(Fe)　is　440　nm.　The　flat-band　potential　of　MIL-68(Fe)　is　-0.6　V　vs.　NHE　at　pH　=　6.8,　which　is　more　negative　than　the　redox　potential　of　Cr(VI)/Cr(III)　(+0.51　V,　pH　=　6.8).　Consequently,　it　is　thermodynamically　permissible　for　the　transformation　of　photogenerated　electrons　to　the　Cr(VI)　to　produce　Cr(III).　Moreover,　MIL-68(Fe)　could　perform　as　an　efficient　photocatalyst　towards　the　reduction　of　Cr(VI)　aqueous　with　a　wide　pH　range.　After　5　min　of　visible　light　illumination　(lambda　＞　420　nm),　almost　100%　Cr(VI)　can　convert　to　Cr(III)　with　(NH4)(2)C2O4　as　a　scavenger　(pH　=　3),　which　is　also　higher　than　that　of　N-doped　TiO2　(50%)　and　ZnO　(7.6%)　under　identical　conditions.　Furthermore,　MIL-68(Fe)　is　proved　to　perform　as　a　highly　efficient　photocatalyst　for　remove　of　different　aqueous　contaminant　with　malachite　green　(MG)　as　a　scavenger.　Finally,　a　possible　reaction　mechanism　has　also　been　investigated　in　detail.　(C)　2017　Elsevier　B.V.　All　rights　reserved.