Journal
CHEMISTRY OF MATERIALS
Volume 14, Issue 2, Pages 750-759Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm011217a
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Mesostructured TiO2-hexadecyltrimethylammonium bromide hybrid powders, displaying a bidimensional hexagonal pattern (p6m), have been synthesized by an evaporation-induced self-assembly (EISA) method, in ethanol/HCl/H2O media. Thermal treatment of these titaniatropic hybrid phases leads to phosphorus-free, high surface area (280-370 m(2) g(-1)) mesoporous titania, with 20-25 Angstrom pores. The role of the synthesis parameters (surfactant and acid concentrations and temperature) is thoroughly discussed to understand their influence on the hybrid mesostructures. It is suggested that hydrophilic Ti-oxo nanometric building blocks formed in the acidic synthesis conditions self-assembly upon solvent evaporation to produce organized structures.
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