One pot synthesis of mesostructured non-silica oxides nanocrystallites
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Some typical worm-like mesoporous non-silica oxides, titania, zirconia, and dopants-incorporated zirconia oxides, with homogeneous nanocrystalline framework and narrow pore-size distribution have been synthesized via a facile process templated from composite surfactant of a long chain poly block copolymer combined with non-ionic alkyl-PEO surfactant (Brij56) under the hydrothermal condition. Bi- or even multi-component zirconia-based composites with further addition of other oxide compositions can also be obtained with well-defined mesoporous structure and nanocrystalline framework. These mesostructured oxides/composite oxides show high surface area, well-crystallization framework, and high thermal stability. XRD, nitrogen adsorption analysis, TEM, and EDX were used for the structural characterizations. The use of non-ionic block-copolymer surfactant is believed to be responsible for the crystallization of mesoporous framework and high thermal stability at high temperature without structural collapse.
KeywordsCeO2 Mesoporous Structure Brij56 Select Area Electron Diffraction Pattern Zirconium Sulfate
We gratefully acknowledge the financial support from the National Natural Science Foundation of China with Contract 50872140, the State Scientific & Technological Supporting Project (2007BAJ03B01), and Shanghai standard project (08DZ05020000).
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