The　novel　mesoporous　TiO2/BMMs　nanocomposites　using　bimodal　mesoporous　silica　(BMMs)　as　support　and　rutile-anatase　mixed　phase　as　active　species　were　successfully　synthesized　via　hydrothermal　and　subsequent　calcination　method.　Their　structural　and　physiochemical　properties　were　characterized　by　X-ray　diffraction,　scanning/transmission　electron　microscopy,　BET-isotherms,　inductive　coupled　plasma　optical　emission　spectroscopy,　zeta　potential,　Fourier　transform　infrared　and　UV-visible　spectroscopy.　The　results　demonstrated　that　the　photocatalytic　degradation　activity　of　the　synthesized　catalysts　were　extensively　enhanced　as　compare　to　bare　TiO2,　due　to　the　highly　uniform　dispersion　of　mixed　phases　(Anatase　and　Rutile)　TiO2　on　the　bimodal　mesoporous　surfaces.　Particularly,　the　catalytic　efficiency　became　increased　as　increasing　the　calcination　temperature,　showing　the　highest　(98%)　overall　removal　of　CV　dye　using　TBH5d　as　cat-alyst　calcinated　at　800　degrees　C.　Its　most　interesting　finding　is　that　the　%　adsorption　of　TBH5d　was　46　%,　more　than　that　(26%)　of　TBH5c　calcinated　at　600　celcius,　however,　its　%　degradation　was　21　%,　lower　than　that　(39　%)　of　TBH5c　for　dye　concentration　of　20　ppm　in　50　min.　Meanwhile,　the　kinetic　adsorption　and　degradation　performances　were　followed　the　pseudo　second　and　first　order　models,　respectively,　further　proving　the　high　degradation　efficiency　of　TBH5c　with　high　rate　constant　than　that　of　TBH5d.　Thermodynamic　parameters　(DGads,　DHads,　and　DSads)　were　calculated,　suggesting　the　spontaneous　and　exothermic　procedure　with　high　entropy,　while　the　adsorption　equilibrium　data　was　fitted　to　Dubinin-Radushkevich　model.　Both　TBH5c　and　TBH5d　showed　an　excellent　stability　and　reactivity　71.2　and　61　%,　respectively,　even　after　5th　cycles.　Thus,　these　results　suggested　that　that　TBH5c　may　be　one　of　the　suitable　candidates　in　wastewater　treatments.　(C)　2021　The　Authors.　Published　by　Elsevier　B.V.　on　behalf　of　King　Saud　University.