Recoverable　TiO2　photocatalysis　material　supported　by　silicon　powder　was　prepared　with　sol-gel　method,　afterwards　the　silica　gol　and　sodium　silicate　were　used　as　molding　binder　respectively　to　investigate　their　effects　(including　binder　type　and　binder　addition　quantity)　on　the　crystal　structure　and　catalysis　properties　of　photocatalyst.　In　this　work,　the　catalysis　activity　was　defined　as　the　degradation　rate　of　methyl　orange　solution　upon　ultraviolet　lamp　irradiation,　and　the　specific　areas　were　determined　with　nitrogen　desorption　method.　TiO2　crystal　form　was　measured　with　X-ray　powder　diffraction　and　their　micro-morphology　was　observed　with　SEM.　Experimental　results　indicate　that　these　two　binders　do　not　affect　the　crystal　form　transformation　of　TiO2,　but　silica　gol　can　increase　the　specific　surface　area　of　TiO2　photocatalyst　obviously　and　the　addition　of　sodium　silicate　can　decrease　it.　In　all,　silica　gol　is　a　better　candidate　than　sodium　silicate　for　higher　catalysis　property.　In　conclusion,　6%　silica　gol　is　the　optimal　addition　concentration.　Under　this　condition,　the　ratio　of　anatase　to　rutile　TiO2　is　64:36,　the　specific　area　is　29.67　m(2)/g,　and　as　expected,　the　degradation　rate　of　methyl　orange　could　be　as　high　as　90%　after　irradiation　for　5　days.