Coordination Self-Assembly of Heterogenite Nanosheets into Uniform Nanospheres Through an Ultrasonic-Assisted Process

Abstract

Large-scale uniform β-CoOOH nanospheres were prepared under ultrasonic conditions through coordination self-assembly of heterogenite nanosheets. The nanospheres were composed of about 10 nm-thick single-crystalline nanosheets with the averaged diameter of about 120 nm. A rational mechanism based on the coordination self-assembly and oriented attachment through ultrasonic assisted process is proposed for the self-assembly of heterogenite single-crystal nanosheets into nanospheres. This result may facilitate not only the exploration of the preparation of the heterogenite nanostructures through a simple and facile controlled-route, but also a general approach for the large-scale, high-purity growth of different nanostructures of a wide range of transition metal correlated materials.