杜显锋西安交通大学教师主页管理系统 One-step Preparation of Nanoarchitectured TiO2 on Porous Al as Integrated Anode for High-performance Lithium-ion Batteries 中文主页

Towards ultrafine TiO2 nanocrystal at room temperature

摘要：: Ultrafine titanium dioxide (TiO2) nanocrystal has attracted enormous interest due to their unusual quantum and surface effects. Here, we propose a facile route to synthesize ultrafine anatase nanocrystal at room temperature via an aqueous sol-gel method using lactic acid (LA) and acetylacetone (Acac) as double chelators. Transmission electron microscopy (TEM) and size analyzer confirmed that TiO2 nanocrystal in precursor possessed an average size of similar to 3 nm with a narrow size distribution. Crystal structure characterized by TEM and X-ray diffraction (XRD) indicated that TiO2 nanocrystal to be anatase phase. The results of field emission scanning electron microscopy (FE-SEM) and BET surface area exhibited that TiO2 xerogel powder had mono-dispersed particles size and large BET surface area up to 90 m(2)/g.