Two-dimensional　(2D)　oxide　nanosheet　has　attracted　multidisciplinary　study　because　of　its　unique　physicochemical　properties.　In　this　work,　a　visible-light　driven　2D　nanosheet　photocatalyst,　SnNb2O6　nanosheet　(SNNS),　has　been　applied　into　the　selective　photocatalysis　for　the　first　time.　It　is　found　that　the　SNNS　sample　exhibits　significantly　higher　selectivity　and　superior　activity　for　the　photocatalytic　degradation　of　positively　charged　pollutants　from　a　mixture　solution　compared　with　the　bulk　SnNb2O6,　TiO2,　and　N-doped　TiO2　under　visible　light　irradiation,　even　when　the　concentrations　of　other　pollutants　are　much　higher　than　those　of　cationic　pollutants.　This　high　selectivity　and　activity　may　be　explained　by　the　integrative　effect　of　the　unique　crystal　structure,　highly　selective　adsorption　performance,　and　oxidation　of　the　photogenerated　holes.　By　analyzing　the　results　of　X-ray　photoelectron　spectroscopy　(XPS)　and　Fourier　transform　infrared　(FT-IR)　spectroscopy,　as　well　as　combining　with　the　crystal　structure　of　the　nanosheet,　the　interaction　between　the　SNNS　sample　and　the　pollutants　has　also　been　well　investigated.　In　addition,　the　photocatalytic　mechanism　under　visible　light　irradiation　has　also　been　discussed.　Our　current　work　may　widen　the　application　of　the　nanosheet　and　open　promising　prospects　for　the　utilization　of　the　nanosheet　as　visible　light　photocatalyst　for　selective　degradation　in　environmental　remediation.　(C)　2012　Elsevier　B.V.　All　rights　reserved.