Bi　6O　6(OH)　3(NO　3)　3·1.5H　2O　nanosheets　were　successfully　synthesized　via　microwave-assisted　hydrothermal　method　and　utilized　for　photocatalytic　degradation　of　dyes　in　Water.　The　Bi　6O　6(OH)　3(NO　3)　3　nanosheets　with　thicknesses　of　50-60　nm　were　first　synthesized　by　template-free　microwave　hydrothermal　method.　The　as-prepared　samples　were　characterized　by　X-ray　diffraction,　BET　surface　area　analysis,　UV-vis　reflectance　spectrum　and　scanning　electron　microscopy　(SEM).　Comparing　with　the　samples　synthesized　via　conventional　hydrothermal　method,　the　samples　under　microwave　heating　have　the　advantage　of　shorter　reaction　time,　sheet-like　morphology　and　larger　surface　area,　which　leads　to　more　efficient　photocatalytic　degradation　for　dyes.　©　2012　Elsevier　B.V.　All　rights　reserved.