Metal-organic　framework　In-benzenedicarboxylate　(MIL-68(In))　and　its　derivative　(In-2-NH2-benzenedicarboxylate,　MIL-68(In)-NH2)　were　prepared　via　a　simple　solvothermal　method.　Powder　X-ray　diffraction　(XRD)　confirmed　the　isoreticular　nature　of　MIL-68(In)　and　MIL-68(In)-NH2,　while　Fourier　transformed　infrared　spectra　(FUR)　proved　the　effective　presence　of　amino　group.　Moreover,　combined　with　UV-vis　diffuse　reflectance　spectra　(DRS)　analysis,　it　was　revealed　MIL-68(In)-NH2　shown　an　extra　absorption　band　in　the　visible　light　region　with　the　absorption　edge　extending　to　around　440　nm.　Importantly,　MIL-68(In)-NH2　was　proved　to　perform　as　an　efficient　visible-light-driven　photocatalyst　with　considerable　activity　and　stability　for　the　reduction　of　Cr(VI),　which　could　be　attributed　to　its　relatively　high　CB　based　on　the　result　of　Mott-Schottky　experiment.　Further　experimental　results　revealed　that　the　addition　of　hole　scavenger　and　pH　value　of　the　reaction　solution　played　important　roles　in　the　photocatalytic　reduction　of　Cr(VI).　Finally,　a　possible　reaction　mechanism　had　also　been　investigated　in　detail.　(C)　2014　Elsevier　B.V.　All　rights　reserved.