3,4-dichlorophenoxyacetate interleaved into anionic clay for controlled release formulation of a new environmentally friendly agrochemical

• Main Authors: Ghazali, S.A.I.S.M (Author), Hussein, M.Z (Author), Sarijo, S.H (Author)
• Format: Article
• Language: English
• Published: Springer New York LLC 2013
• Subjects: 3; 4-dichlorophenoxyacetic acid; Aluminum compounds; Anionic clay; Chlorine compounds; Controlled release formulations; Controlled release properties; Coprecipitation method; Fourier transform infrared studies; Layered double hydroxide; Layered double hydroxides; Nano hybrids; Nanohybrid; Nanostructured materials; organic-inorganic materials; Organic-inorganic nanohybrid; Sulfur compounds; Thermoanalysis; Thermodynamic stability; Zinc compounds
• Online Access: View Fulltext in Publisher; View in Scopus

 A new layered organic-inorganic nanohybrid material, zinc-aluminum-3,4-dicholorophenoxyacetate (N3,4-D) in which an agrochemical, 3,4-dichlorophenoxyacetic acid (3,4-D), is intercalated into zinc-aluminum-layered double hydroxide (ZAL), was synthesized by coprecipitation method. A well-ordered nanomaterial was formed with a percentage loading of 53.5% (w/w). Due to the inclusion of 3,4-D, basal spacing expanded from 8.9 Å in ZAL to 18.7 Å in N3,4-D. The Fourier transform infrared study shows that the absorption bands of the resulting nanohybrid composed of both the 3,4-D and ZAL further confirmed the intercalation episode. Thermal analysis shows that ZAL host enhances the thermal stability of 3,4-D. Controlled-release experiment shows that the release of 3,4-D in the aqueous media is in the order of phosphate > carbonate > sulfate > chloride. These studies demonstrate the successful intercalation of the 3,4-D and its controlled release property in various aqueous media. © 2013 Ghazali et al.; licensee Springer.