Facile control of ZnO nanostructures by varying molar concentration of zinc acetate

Publication date: June 2017
Source:Materials Research Bulletin, Volume 90
Author(s): H.R. Guzmán-Carrillo, E.M. Rivera-Muñoz, N. Cayetano-Castro, R. Herrera-Basurto, Z. Barquera-Bibiano, F. Mercader-Trejo, A. Manzano-Ramírez
This paper reports the synthesis of ZnO nanostructures (nano-bullets, nanorods, nanospheres) by a facile and novel modified polyol method without surfactants, varying only the molar concentration of precursor salt (Zinc acetate dihydrate) using ethylene glycol and deionized water. At a constant temperature of 160°C, nano-bullets were obtained at a concentration of 0.6M, whereas at 0.8M nanorods were observed while at 1.0M only nanospheres appear. X-ray Diffraction, Scanning Electron Microscopy, High-Resolution Transmission Electron Microscopy and Room-Temperature Photoluminescence properties were used to characterize the nanostructures. Based on the results it is suggested a high dependence between morphology and molar concentration of the precursor salt as well as a mechanism of crystallization of the different nanostructures. The nanostructures may be used to produce optoelectronic devices.

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