Highly　efficient　heterostructured　stannic　disulfide/stannic　anhydride　(SnS2/SnO2)　hybrids　with　different　morphologies　were　fabricated　via　a　two-step　hydrothermal　method.　The　composition　and　morphology　of　the　obtained　products　were　investigated　by　X-ray　diffraction　(XRD),　scanning　electron　microscopy　(SEM),　X-ray　photoelectron　spectroscopy　(XPS),　and　UV–vis　diffuse　reflectance　spectroscopy　(DRS).　The　SEM　images　showed　that　core-shell　structured　SnS2/SnO2　nanotubes　and　hierarchical　SnS2　flowers　decorated　with　SnO2　particles　were　fabricated　under　different　synthetic　conditions.　The　DRS　results　of　the　hybrids　showed　that　the　absorption　edges　were　gradually　redshifted　with　increasing　SnS2　content.　In　the　photocatalytic　reduction　of　chromium　(VI)　under　visible　light,　the　SnS2/SnO2　hybrid　prepared　with　thioacetamide　addition　of　0.60　g　exhibited　the　best　photocatalytic　activity,　which　was　approximately　6.8　times　higher　than　that　of　pure　SnS2.　This　increase　in　the　reduction　performance　might　be　ascribed　to　the　strengthened　absorption　of　visible　light,　the　rapid　interfacial　charge　transfer　and　the　promoted　charge　separation　efficiency.　Photocurrent-　response　measurements,　electrochemical　impedance　spectroscopy,　and　photoluminescence　emission　tests　confirmed　the　faster　charge　transfer　and　efficient　charge　separation　over　the　heterostructured　SnS2/SnO2　hybrids.　Lastly,　a　photocatalytic　reduction　mechanism　for　chromium　(VI)　over　SnS2/SnO2　hybrids　was　proposed.　©　2018　Elsevier　Inc.