Synthesis of dual herbicides-intercalated hydrotalcite-like nanohybrid compound with simultaneous controlled release property

• Published in: Journal of Porous Materials
• Main Author: Sarijo S.H.; Ghazali S.A.I.S.M.; Hussein M.Z.
• Format: Article
• Language: English
• Published: Kluwer Academic Publishers 2015
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925522173&doi=10.1007%2fs10934-015-9916-x&partnerID=40&md5=98001f0cd2916d0cf8db0820a6b8f41f

A new monophasic nanohybrid containing two herbicides anions, 3,4-dichlorophenoxyacetate (3,4D) and 2-methyldichlorophenoxyacetate (MCPA), was successfully synthesized. The two anions were simultaneously intercalated into the inorganic interlayers of zinc-aluminium-layered double hydroxide (ZAL) for the formation of a nanohybrid, ZAL—MCPA—3,4D (ZAMDX) by anion exchange method. The properties of ZAL intercalated with single guest MCPA and 3,4D, as well as dual-guest nanocomposite were monitored using powder X-ray diffractometer (PXRD), and showed a basal spacing of 19.7, 19.0 and 19.2 Å, respectively. Direct-injection mass spectroscopy (DIMS) and Fourier transform infrared (FTIR) confirmed the dual intercalation of both anions into the interlayer regions of dual-guest nanocomposite. The release of MCPA and 3,4D from ZAMDX fitted a pseudo-second order model and possessed good controlled release properties. This release property exhibits the potential application of layered materials as a delivery system, as well as reservoirs, especially when multiple active agents are used simultaneously in the formation of an organic–inorganic host–guest nanohybrid. © 2015, Springer Science+Business Media New York.