Microwave Assisted ZnO Nanoparticles by Simple Precipitation Method: A Novel Approach

Abstract

Stated work consisted synthesis of ZnO nanoparticles (NPs) by the irradiation of microwaves. Material is formed by a simple chemical precipitation method by using Zinc Acetate Dehydrate (Zn(CH3COO)2[Formula: see text]2H2O) and Sodium hydroxide (NaOH) as base chemicals in aqueous media for two different pH (12 and 14) values. This synthesis was carried out at room temperature. Synthesized NPs are dried in Microwave oven for 3 min of duration each. X-ray Diffraction (XRD) study confirmed the trend of incremental crystallinity upon increasing pH. XRD reveals the existence of (100), (002), (101), (102) and (110) reflections at [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] two theta values, respectively. Crystallite size was determined by both Scherrer formula and W–H plot method. UV-Vis spectroscopy is utilized to probe the optical features of ZnO NPs. This confirms intrinsic excitonic transition properties of ZnO. UV absorbance shows decrement upon increasing pH value. Band gap depicts the decremental behavior upon increasing pH. Stated method is a novel and time saving method for ZnO NPs synthesis; a large scale production is also feasible by this method.