AUTHOR: Makoto Ogawa, Vidyasirimedhi Institute of Science and Technology (VISTEC), Thailand & Institute for Aqua Regeneration, Shinshu University, Japan.
WHEN: January, 21 - 12PM
WHERE: Salón de Actos, Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC)
ABSTRACT: Core/shell particles constitute an important class of hybrid materials, rationally designed through the integration of distinct core and shell components into a well-defined nanostructure, and they have found broad applications across catalysis, energy conversion, biomedicine, and advanced coatings. Silica has been commonly used as a shell material on functional particles to prepare functional core/shell particles for the application as photocatalysis, dielectric or electric properties, energy storage, and others. In the present article, examples of the preparation of TiO2/SiO2 and ZnO/SiO2 core/shell particles (mainly by the deposition of SiO2 on TiO2 and ZnO from solutions) were overviewed. Due to the versatile application and associating materials’ variation of TiO2 and ZnO, coating with SiO2 has been done to meet the expected performances in the target applications. The structure types and the detailed structures (thickness of the shell and the nanostructure of the shell) are classified and the preparation to design them by careful experiments were summarized. The synthetic parameters affecting the structure of the TiO2/SiO2 or ZnO/SiO2 core/shell particles will be considered for the hybridization with other materials, not only TiO2 and ZnO, to design novel functional hybrid materials.
INVITED BY Pilar Aranda
