Synthesis and characterization of ZrO2 capsules and crystalline ZrO2 thin layers on Fe2O3 powders

Abstract

A novel solution deposition process has been developed to prepare thin crystalline ZrO₂ layers on particle surfaces. The thickness and morphology of the ZrO₂ layers can be controlled by using surfactants under different reaction conditions. A needle-shaped monoclinic ZrO₂ array was formed by a multi-step deposition process with surfactants. Hollow ZrO₂ capsules that were obtained by dissolving the nanoparticle cores exhibited obvious photocatalytic properties for the degradation of Rhodamine B. This is a general process that can form crystalline layers coated on matrix core particles in solution.