Preparation of Hollow Anatase TiO Nanospheres via Ostwald Ripening.

In this work, we report a simple "one pot" approach to prepare hollow anatase TiO nanospheres via Ostwald ripening under hydrothermal conditions. Inner nanospace and highly organized crystallites in the shell structure and surface regions can be created with a wide range of controlling parameters. The formation mechanism has been investigated with TEM/ED/SEM/EDX/XRD/XPS methods. The approach shows a high versatility for structural engineering of various targeted morphological products, including inner material refills.