Synthesis and physicochemical characterization of Zn-2,4-dichlorophenox acetate layered nanohybrid and controlled release properties

Abstract

Reaction of ZnO with 2,4-Dichlorophenoxy acetic acid (24D) for the formation of a Zn-24D-layered nanohybrid (ZDN), was accomplished . Powder X-ray Diffractogram shows a well ordered crystalline nanomaterial in two phases with a spacing 25.2, and 24 Ǻ. SEM and TEM studies show a flower-like morphology which is highly effected by the concentration of the 24D used. The release studies showed a rapid release of 94% of 24D for the first 100 min. which govern by the inter particle diffusion pseudo second order was found to govern the release of 24D from ZDN. This study suggests controlled release formulation. Key words: Nanocomposite, 2,4-dichlorophenoxy acetic acid, zinc oxide layer nanohybrid, controlled release.