A facile sonochemical route to morphology controlled nickel complex mesostructures

This article presents the fabrication of shape-controllable crystalline nickel hydrazine complex structures via a simple sonochemical route. The morphologies of the nickel complex particles are self-organized into hexagonal plate-like and disk-like morphologies depending on the reaction conditions. A possible evolution mechanism of the nickel complex particles with different morphologies is discussed. On the basis of our experimental observations and understandings of the crystal growth, the formation of the plates is believed to mainly attribute to the oriented attachment of small particles. Nickel complex particles can continue self-assemble into impeller or clew-like morphologies on the base of the formed plate-like particles. This work provides a simply, high-yield, and mild reaction conditions route to the nickel complex structures, which might represent a promising method for the preparation of other metal complex structures or inorganic complex structures with desired morphologies.