Synthesis of hybrid organic-inorganic hydrotalcite-like materials intercalated with duplex herbicides: The characterization and simultaneous release properties

• Published in: Molecules
• Main Author: Ghazali S.A.I.S.M.; Fatimah I.; Bohari F.L.
• Format: Article
• Language: English
• Published: MDPI AG 2021
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113537637&doi=10.3390%2fmolecules26165086&partnerID=40&md5=6b5198eb9ad9aaa070d0b5e656eee12a

In this study, a controlled-release formulation of duplex herbicides, namely, 2,4,5-trichlorophenoxybutyric acid (TBA) and 3,4-dichlorophenoxy-acetic acid (3,4D), was simultane-ously embedded into Zn-Al-layered double hydroxides (LDHs). The resulting nanohybrid Zinc-Aluminium-3,4D-TBA (ZADTX) was composed of a well-ordered crystalline layered structure with increasing basal spacing from 8.9 Å to 20.0 Å in the Powder X-ray Diffraction (PXRD) with 3,4D and TBA anions located in the gallery of LDHs with bilayer arrangement. The release of 3,4D and TBA fit the pseudo-second-order model. This duplex nanohybrid possessed a well-controlled release property (53.4% release from TBA and 27.8% release from 3,4D), which was highly effective, requiring the use of a small quantity and, hence, environmentally safer. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.