Preparation of ordered mesoporous NbTa mixed oxide with crystallized wall

摘要

An ordered 2D-hexagonal mesoporous Nb and Ta (Nb:Ta=1:1) mixed oxide was successfully crystallized. A new strategy for preserving mesoporous structure after the crystallization of the walls was performed by re-filling a templating material to the mesopores before crystallization for suppressing the destruction of mesoporous structure. Transmission electron microscopy and electron diffraction analyses revealed the formation of crystallized mesoporous NbTa mixed oxide with single crystal phases in periodical mesoporous structure (denoted NbTa-TIT-2) at ca. 100-nm range.