Preparation of Mesoporous Nonsilica Materilals Using Ordered Mesoporous Carbon as the Template

摘要

Since the discovery of mesoporous silica materials, increasing attention has been focused on surfactant-templated synthesis of non-siliceous mesoporous materials based on metal oxides. Especially, many effects have been devoted to the synthesis of mesoporous transition metal oxides which are expected to be very useful for several applications. The mesoporous transition metal oxide with ordered mesoporous structure, high surface area and crystalline framework structures are expected to have a lot of advantages for catalysis and nano-science. The synthesis of these materials is generally achieved by a modified sol-gel route using surfactants or amphiphilic copolymers as templates. However, the synthesis of mesoporous metal oxides has been less successful compared with that of silica materials. One difficulty may be a facile crystallization of most metal oxides, accompanied by structural collapse, during the mesostructure formations and the removal of the organic templates. It is necessary to find a new template with rigid and stable nature to overcome their synthesis drawback. A new series of ordered mesoporous carbon materials, which are obtained by using mesoporous silica materials as templates, has been attracted much attention as adsorbents, catalyst supports, and materials for advanced electronics applications. Because the mesoporous carbons have well-ordered mesoporosity and rigidity, it can be an excellent template for the porous inorganic materials. Recently, the successful use of the mesoporous carbon materials as the templates for the mesoporous silica has been reported via nano-replication technique. In the present work, we will discuss the preparation of mesoporous transition metal oxide materials using the ordered mesoporous carbon as a template.