A GENERAL ANISOTROPIC ETCHING STRATEGY FOR THE FABRICATION OF TUBE-LIKE OR MESOPOROUS SINGLE CRYSTAL TiO2

Abstract

A general anisotropic etching strategy is proposed here for the synthesis of four types of novel TiO 2 materials with versatile tube-like and single-crystalline mesoporous micro-nanostructures. All the tube-like TiO 2 materials have V-shaped inner structure and the mesoporous products have high single-crystallinity. In the fabrication process, etching agents and titanium sources play vital role in determining the morphology of the TiO 2 products. This opens a door toward facile fabrication of tube-like or single-crystalline mesoporous nanomaterials via anisotropic etching route.