Synthesis of monodisperse mesoporous titania beads with controllable diameter, high surface areas, and variable pore diameters (14−23 nm)

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dc.contributor.authorChen, DHen_AU
dc.contributor.authorCao, Len_AU
dc.contributor.authorHuang, FZen_AU
dc.contributor.authorImperia, Pen_AU
dc.contributor.authorCheng, YBen_AU
dc.contributor.authorCaruso, RAen_AU
dc.date.accessioned2010-04-20T01:11:57Zen_AU
dc.date.accessioned2010-04-30T05:05:31Zen_AU
dc.date.available2010-04-20T01:11:57Zen_AU
dc.date.available2010-04-30T05:05:31Zen_AU
dc.date.issued2010-03-31en_AU
dc.date.statistics2010-03-31en_AU
dc.description.abstractMonodisperse mesoporous anatase titania beads with high surface areas and tunable pore size and grain diameter have been prepared through a combined sol−gel and solvothermal process in the presence of hexadecylamine (HDA) as a structure-directing agent. The monodispersity of the resultant titania beads, along with the spherical shape, can be controlled by varying the amount of structure-directing agent involved in the sol−gel process. The diameter of the titania beads is tunable from 320 to 1150 nm by altering the hydrolysis and condensation rates of the titanium alkoxide. The crystallite size, specific surface area (from 89 to 120 m2/g), and pore size distribution (from 14 to 23 nm) of the resultant materials can be varied through a mild solvothermal treatment in the presence of varied amounts of ammonia. On the basis of the results of small-angle XRD, high-resolution SEM/TEM, and gas sorption characterization, a mechanism for the formation of the monodisperse precursor beads has been proposed to illustrate the role of HDA in determining the morphology and monodispersity during the sol−gel synthesis. The approach presented in this study demonstrates that simultaneous control of the physical properties, including specific surface area, mesoporosity, crystallinity, morphology, and monodispersity, of the titania materials can be achieved by a facile sol−gel synthesis and solvothermal process. © 2010, American Chemical Societyen_AU
dc.identifier.citationChen, D. H., Cao, L., Huang, F. Z., Imperia, P., Cheng, Y. B., & Caruso, R. A. (2010). Synthesis of monodisperse mesoporous titania beads with controllable diameter, high surface areas, and variable pore diameters (14-23 nm). Journal of the American Chemical Society, 132(12), 4438-4444. doi:10.1021/ja100040pen_AU
dc.identifier.govdoc1358en_AU
dc.identifier.issn0002-7863en_AU
dc.identifier.issue12en_AU
dc.identifier.journaltitleJournal of the American Chemical Societyen_AU
dc.identifier.pagination4438-4444en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/ja100040pen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3237en_AU
dc.identifier.volume132en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectSurface areaen_AU
dc.subjectPore structureen_AU
dc.subjectGrain sizeen_AU
dc.subjectSol-gel processen_AU
dc.subjectTitaniumen_AU
dc.subjectMorphologyen_AU
dc.subjectOxidesen_AU
dc.subjectPrecursoren_AU
dc.subjectMineralsen_AU
dc.titleSynthesis of monodisperse mesoporous titania beads with controllable diameter, high surface areas, and variable pore diameters (14−23 nm)en_AU
dc.typeJournal Articleen_AU
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