Evolution of the zinc compound nanostructures in zinc acetate single-source solution

摘要

A series of nanostructured zinc compounds with different nanostructures such as nanobelts, flake-like, flower-like, and twinning crystals was synthesized using zinc acetate (Zn(Ac)_2) as a single-source. The evolution of the zinc compounds from layered basic zinc acetate (LBZA) to bilayered basic zinc acetate (BLBZA) and twinned ZnO nano/microcrystal was studied. The low-angle X-ray diffraction spectra indicate the layered spacing is 1.34 and 2.1 nm for LBZA and BLBZA, respectively. The Fourier transform infrared (FTIR) spectra results confirmed that the bonding force of acetate anion with zinc cations decreases with the phase transformation from Zn(Ac) _2 to BLBZA, and finally to LBZA. The OH~- groups gradually replaced the acetate groups coordinated to the matrix zinc cation, and the acetate groups were released completely. Finally, the Zn(OH)_2 and ZnO were formed at high temperature. The conversion process from Zn(Ac)_2 to ZnO with release of acetate anions can be described as Zn(Ac)_2 → BLBZA → LBZA → Zn(OH)_2 → ZnO.