Prelaminar　synthesis　of　anatase　TiO2　nanoparticles　supported　on　bimodal　mesoporous　silica　(BMMs)　was　carried　out　by　impregnation　method.　Physiochemical　characteristic　and　structural　morphology　of　synthesized　catalyst　(TiO2/BMMs)　were　studied　in　detail　by　X-ray　diffraction　patterns,　N-2　sorption　isotherms,　Fourier　transform　infrared　and　ultraviolet-visible　spectra,　surface-zeta　charges,　inductively　coupled　plasma　atomic　emission　spectroscopy,　scanning　electron　microscopy　and　transmission　electron　microscopy.　The　results　demonstrated　that　the　anatase　TiO2　nanoparticles　in　size　of　around　5.06　nm　were　uniformly　dispersed　on　the　mesoporous　surface　of　BMMs.　The　resultant　TiO2/BMMs　as　photo-catalyst　had　extensive　effect　on　degradation　performances　(93.6　%)　of　alizarin　red　dye　in　aqueous　solution,　in　which　the　effects　of　various　parameters,　such　as　pH,　dose,　and　pollutant　concentration　on　the　adsorption　capacity　and　further　photo-degradation　were　explored.　Meanwhile,　the　reused　photocatalyst　after　five　successive　cycles　presented　a　higher　activity　with　degradation　up　to　61.1　%,　suggesting　a　good　stability　of　newly　synthesized　catalyst.