| 摘要 |
A method for preparing metal oxide hollow nanocapsules is provided to produce the metal oxide hollow nanocapsules having excellent dispersibility in a water system and a uniform size distribution. A method for preparing metal oxide hollow nanocapsules includes the steps of: (a) dispersing metal oxyhydroxide particles in a mixture of water and alcohol to obtain a metal oxyhydroxide dispersion; (b) adding a silica precursor to the metal oxyhydroxide dispersion to form a silica coating layer on a metal oxyhydroxide particle by a sol-gel reaction; (c) heat-treating the metal oxyhydroxide having a silica coating layer to prepare the metal oxide hollow nanocapsules having a silica coating layer; and (d) removing the silica coating layer. Further, the metal oxyhydroxide is selected from akaganeite, boehmite, heterogenite, chromia aerogel, indium oxyhydroxide, manganite, nickel oxyhydroxide or tungsten oxyhydroxide. |
