Fabrication of Large-Scale Hierarchical ZnO Hollow Spheroids for Hydrophobicity and Photocatalysis

Abstract

A simple procedure allows the preparation of a hollow spheroid ZnO material like a natural cocoon (see figure). A bubble-template strategy is designed through a modified hydrothermolysis (MHT) reaction to construct hollow ZnO nanostructures. The hollow spheroids allow multiple reflections of UV-visible light within the interior cavity that facilitates efficient usage of the light source. The 3D nanococoon architecture improves the superhydrophobicity and photocatalytic performances of these materials.