Layered　K-Fe-Ti　metal　oxide　catalysts　with　different　K　:　Fe　:　Ti　molar　ratios　were　synthesized　by　the　conventional　solid-state　reaction　and　characterized　using　X-ray　diffraction,　scanning　electron　microscopy,　transmission　electron　microscopy,　and　UV-Vis　diffuse　reflectance　spectroscopy.　There　were　two　kinds　of　crystal　structure　in　the　catalysts,　tetragonal　and　orthorhombic　symmetry　phases,　which　is　related　to　the　amount　of　interlayer　K+　ions　and　solid-state　reaction　temperature.　In　the　UV-Vis　diffuse　reflectance　spectra　of　the　catalysts,　the　absorption　peaks　in　the　visible　region　appeared,　and　the　absorption　peaks　at　400　similar　to　550　nm　were　attributed　to　the　octahedral　Fe3+　species.　Moreover,　the　excessive　amount　of　Fe3+　ions　in　the　materials　could　increase　the　isolated　Fe2O3　species　but　could　not　affect　the　crystal　structure　of　catalyst.　In　the　presence　of　the　electron　donor,　H2C2O4,　the　catalyst　with　the　orthorhombic　crystal　phase　exhibited　higher　photocatalytic　activity　for　water　splitting　than　that　with　the　tetragonal　crystal　phase,　but　the　latter　showed　better　reaction　stability　for　the　hydrogen　evolution　from　water.