A　nanowire-directed　templating　solution-based　synthesis　strategy　was　developed　to　selectively　prepare　uniform　CeO2　nanotubes　and　heterostructured　nanowires　by　fine-tuning　surface　chemistry　of　K1.33Mn8O16　nanowires.　The　morphology　of　CeO2　nanotubes　and　the　decorative　growth　of　solid　CeO2　particles　on　1(1.33Mn8O16　nanowires　changed　as　the　concentration　of　sodium　dodecyl　benzene　sulfonate　(SDBS)　was　altered.　The　resultant　porous　CeO2　nanotubes　showed　excellent　water　purification　performance　for　oxalic　acid-induced　photocatalytic　reduction　of　Cr(VI)　under　UV　light　irradiation　at　room　temperature.　The　enhanced　ability　for　Cr(VI)　photoreduction　on　the　obtained　CeO2　nanotubes　were　investigated.　Our　findings　provide　a　new　means　to　chemically　controlled　growth　of　CeO2　nanostructures　and　demonstrate　a　highly　robust　and　potential　material　for　the　purification　of　Cr(VI)　polluted　water.　(C)　2015　Elsevier　B.V.　All　rights　reserved.