Dependence of ZnO Morphology on Zn2+ Concentration

Abstract

We have succeeded in controlling the morphology of Wulfingite Zn(OH)2 and Wurtzite ZnO at room temperature without using any template or surface ligand through the alteration of zinc ion molarity and the use of the moderately strong cylcohexylamine Brønsted base as a precipitating agent. The morphology was examined by SEM technique while XRD technique was used to identify the precipitated materials. We observed octahedral particles when the [Zn2+] was in the range of 0.09-0.02 Molar, flake-like particles when applying 0.19 Molar of [Zn2+], and mixture of chuncky and spherical particles when using 0.38 Molar of [Zn2+].