title: A versatile kinetics-controlled coating method to construct uniform porous TiO2 shells for multifunctional core-shell structures.
abstract: The development of a simple and reproducible route to prepare uniform core@TiO(2) structures is urgent for realizing multifunctional responses and harnessing multiple interfaces for new or enhanced functionalities. Here, we report a versatile kinetics-controlled coating method to construct uniform porous TiO(2) shells for multifunctional core-shell structures. By simply controlling the kinetics of hydrolysis and condensation of tetrabutyl titanate (TBOT) in ethanol/ammonia mixtures, uniform porous TiO(2) shell core-shell structures can be prepared with variable diameter, geometry, and composition as a core (e.g., α-Fe(2)O(3) ellipsoids, Fe(3)O(4) spheres, SiO(2) spheres, graphene oxide nanosheets, and carbon nanospheres). This method is very simple and reproducible, yet important, which allows an easy control over the thickness of TiO(2) shells from 0 to ~25, ~45, and ~70 nm. Moreover, the TiO(2) shells possess large mesoporosities and a uniform pore size of ~2.5 nm, and can be easily crystallized into anatase phase without changing the uniform core-shell structures.
authors: Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China.
authors: Wei
authors: W
authors: Li
authors: Jianping
authors: J
authors: Yang
authors: Zhangxiong
authors: Z
authors: Wu
authors: Jinxiu
authors: J
authors: Wang
authors: Bin
authors: B
authors: Li
authors: Shanshan
authors: S
authors: Feng
authors: Yonghui
authors: Y
authors: Deng
authors: Fan
authors: F
authors: Zhang
authors: Dongyuan
authors: D
authors: Zhao