Preparation of Monodispersed ZnO Nanoparticles via Thermal Growth-inhibitive Action of Polyethyleneimine (PEI) at Low Temperature

Abstract

An effective wet-chemical method to produce highly monodispersed ZnO nanoparticles (4-6 nm diameters) is presented. A thermal growth-inhibitive phenomenon of ZnO precursor by PEI was employed to generate monodispersed nanoparticles at low temperature (40 degrees C) and to improve the nanoparticle properties in terms of both size distribution and crystallinity.