One pot synthesis of mesostructured non-silica oxides nanocrystallites

Abstract

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.