Titanate　nanomaterials　(TNs)　were　synthesized　via　a　simple　hydrothermal　method　using　TiO2　(ST-01)　and　NaOH　as　the　raw　materials,　and　presented　different　morphologies　by　adjusting　the　reaction　time.　The　physico-chemical　properties　of　the　as-prepared　TNs,　such　as　morphology,　structure,　surface　area,　and　chemical　composition　were　characterized　by　XRD,　SEM　and　BET.　The　adsorption　capability　and　rules　of　Pb(II)　in　aqueous　solutions　were　tested　in　the　static　system.　The　results　showed　that　the　TNs　prepared　with　12-72　h　reaction　time　were　pure　monoclinic　phase　titanate　and　their　specific　surface　areas　were　in　the　range　from　243.05　m2·g-1　to　286.20　m2·g-1.　TNs　with　reaction　time　between　12-36　h　mainly　showed　sheet　structure,　and　those　with　reaction　time　higher　than　48　h　showed　linear　structure.　The　adsorption　capacity　of　Pb(II)　by　TNs-12,　TNs-24,　TNs-36,　TNs-48,　TNs-60　and　TNs-72　was　479.40,　504.12,　482.00,　388.10,　364.60　and　399.00　mg·g-1,　respectively.　The　sheet　TNs　had　a　better　adsorption　capacity　than　the　linear　TNs.　TNs-24　had　the　highest　adsorbing　capacity.　The　adsorption　kinetics　of　Pb(II)　by　TNs-24　followed　the　pseudo-second-order　model,　and　the　equilibrium　data　was　best　fitted　with　the　Langmuir　isotherm　model.　The　equilibrium　adsorption　time　of　TNs-24　was　120　min,　and　the　adsorption　was　an　exothermic　process,　with　a　high　adsorption　capacity　at　low　temperature　or　room　temperature;　the　optimal　adsorption　pH　was　5.0.　When　pH　was　1.0,　the　desorption　rate　of　TNs-24　could　reach　99.00%,　and　the　removal　efficiency　of　Pb(II)　by　regenerated　TNs　was　still　more　than　97%　after　six　times　of　usage.　Therefore,　TNs　could　efficiently　remove　Pb(II)　in　aqueous　solutions,　and　the　optimal　reaction　time　should　be　controlled　to　12-24　h.　When　Cd　(II)　or　Ni(II)　existed　in　the　solution,　the　equilibrium　adsorption　capacity　and　removal　rate　of　TNs-24　were　decreased.　The　adsorption　mechanism　was　mainly　ion-exchanged　between　Pb(II)　and　H+/Na+in　TNs.　©　2016,　Science　Press.　All　right　reserved.