This　study　describes　the　one-step　in　situ　hydrothermal　construction　of　N/Ti3+　co-doping　biphasic　TiO2/Bi2WO6　heterojunctions　(NT-TBWx)　and　investigates　their　sonophotocatalytic　degradation　of　organic　contaminants　in　water.　The　obtained　samples　are　characterized　in　detail　including　X-ray　photoelectron　spectroscopy,　X-ray　diffraction,　scanning　electron　microscopy,　transmission　electron　microscopy,　and　Ultraviolet　diffuse　reflectance　spectroscopy,　etc.　Their　photocatalytic,　sonocatalytic,　and　sonophotocatalytic　performance　are　compared　by　the　degradation　of　organic　pollutants　and　found　the　degradation　rate　according　to　the　order:　photocatalysis　2　and　pure　TiO2.　Especially,　the　highest　sonophotocatalytic　degradation　rate　is　demonstrated　for　NT-TBW1.　Additionally,　the　excellent　stability　of　NT-TBWx　samples　is　demonstrated　by　four　cycles　of　sonophotocatalytic　measurements　with　a　tiny　decline.　Superoxide　radical　(·O2−)　is　found　to　dominate　the　sonophotocatalytic　degradation　process　of　MB.　The　synergic　effect　among　the　doping　level,　heterophase　junction,　and　heterojunctions　as　well　as　between　sonocatalysis　and　photocatalysis　contribute　to　superior　sonophotocatalytic　activity.　This　work　provides　a　new　alternative　architecture　of　TiO2-based　nanomaterials　and　promotes　their　application　in　environmental　issues.　©　2019　Elsevier　B.V.