title: Self-assembled nanocomposite of organic-inorganic hybrid: 2,4-dichlorophenoxyacetate in Zn-Al hydrotalcite-like layers.
abstract: Hydrotalcite-like inorganic layers of Zn-Al, a host containing an organic moiety, 2,4-dichlorophenoxy-acetate, as a guest, was prepared by the spontaneous self-assembly method from an aqueous solution for the formation of a new layered organic-inorganic hybrid nanocomposite material. In this synthesis, the host- and guest-forming species were simultaneously included in the mother liquor, aged, and separated. Various Zn/Al ratios (R = 2, 3, and 4), concentrations of 2,4-dichlorophenoxyacetic acid (0.03-0.1 M), and pH (7 and 10) were studied to optimize the formation of the layered nancomposite. It was found that the optimum conditions for the formation of the nanocomposite were R = 4, pH 7, and concentration of 2,4-dichlorophenoxyacetic acid = 0.08 M. X-ray diffraction shows that this sample affords a nanolayered structure with a basal spacing of 24.6 A.
authors.affiliation: Multifunctional Nanomaterials for Industrial Application Research Group, Department of Chemistry, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
authors.forename: Mohd Zobir bin
authors.initials: MZ
authors.lastname: Hussein
authors.forename: Junainah Bt
authors.initials: JB
authors.lastname: Mohd Amin
authors.forename: Zulkarnain
authors.initials: Z
authors.lastname: Zainal
authors.forename: Asmah Hj
authors.initials: AH
authors.lastname: Yahaya
mesh_terms: D015084:2,4-Dichlorophenoxyacetic Acid / Q000008:administration & dosage / Q000737:chemistry*; D000535:Aluminum / Q000737:chemistry; D000536:Aluminum Hydroxide / Q000737:chemistry*; D003460:Crystallization / Q000379:methods; D004337:Drug Carriers / Q000138:chemical synthesis; D008276:Magnesium Hydroxide / Q000737:chemistry*; D008422:Materials Testing; D008567:Membranes, Artificial; D008855:Microscopy, Electron, Scanning; D008968:Molecular Conformation; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods*; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction / Q000379:methods; D015032:Zinc / Q000737:chemistry*
chemical_list: D004337:Drug Carriers; D008567:Membranes, Artificial; C010467:hydrotalcite; D015084:2,4-Dichlorophenoxyacetic Acid; D000536:Aluminum Hydroxide; D000535:Aluminum; D015032:Zinc; D008276:Magnesium Hydroxide