Nanostructured　β-Ga2O3　samples　were　prepared　by　a　combination　of　the　solvothermal　processes　and　subsequent　heat　treatments　β-Ga2O3　samples　with　various　morphologies　were　obtained　by　using　different　kinds　of　solvent,　including　water,　isopropanol　and　ethylene　glycol.　One-dimensional　β-Ga2O3　nanorods　were　obtained　in　water　medium,　while　β-Ga2O3　spheres　were　prepared　in　alcohol.　The　possible　mechanism　related　to　the　phase　formation　and　morphology　of　the　as-prepared　materials　was　discussed.　Photocatalytic　performance　of　the　synthesized　β-Ga2O3　samples　was　also　examined.　Results　revealed　that　β-Ga2O3　sample　prepared　with　ethylene　glycol　showed　the　highest　photocatalytic　activity　for　the　degradation　of　salicylic　acid.　This　could　be　ascribed　to　the　high　surface　area,　abundant　hydroxyl　groups,　and　wide　band　gap　of　β-Ga2O3　sample　synthesized　in　ethylene　glycol.　©　2010　Elsevier　B.V.