title: Microwave-assisted synthesis of Zn/Al layered double hydroxide-(anthraquinone-2,6-disulfonate) nanocomposite.
abstract: Nanocomposites of Zn/Al-layered double hydroxide(anthraquinone-2,6-disulfonate) were synthesized by spontaneous direct assembly of inorganic and organic phases from aqueous solution. Powder X-ray diffraction patterns showed that a pure, single nanocomposite phase of good crystallinity was obtained using 1.0 M antraquinone-2,6-disulfonate ion (AQ26) and aging at 80 degrees C using conventional heating for 7 days or 0.5 h under microwave radiation, and these samples are denoted as ZAAN26C or ZAAN26MH, respectively. Zn/Al-nitrate-layered double hydroxide synthesized by a conventional method (ZANLC) showed a basal spacing of 8.3 A while both the nanocomposites showed 18.8 A as a result of AQ26 intercalation. FTIR study showed that the resulting nanocomposites are free from nitrate, the co-anion present in the mother liquor, indicating that only AQ26 is preferred during intercalation for the formation of the nanocomposite. The Brunauer, Emmet and Teller (BET) and micropore surface areas for ZAAN26C decreased relative to the ZANLC from 16.2 to 4.7 and 1.6 to 1.3 m2/g, respectively. These results indicate that AQ26 can be rapidly interdcalated in layered double hydroxide using microwave-aging resulting in a nanocomposite.
authors.affiliation: Multifunctional Nanomaterials for Industrial Application, (MULIA) Research Group, Department of Chemistry, Universiti Putra Malaysia, 43400UPM, Serdang, Selangor Malaysia.
authors.forename: M Z
authors.initials: MZ
authors.lastname: bin Hussein
authors.forename: Z
authors.initials: Z
authors.lastname: Zainal
authors.forename: T Y
authors.initials: TY
authors.lastname: Hin
authors.forename: O W
authors.initials: OW
authors.lastname: Tat
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry* / Q000528:radiation effects; D000880:Anthraquinones / Q000737:chemistry* / Q000528:radiation effects; D003460:Crystallization / Q000379:methods*; D008420:Manufactured Materials / Q000528:radiation effects*; D008422:Materials Testing; D008872:Microwaves; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D017967:Zinc Compounds / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D017607:Aluminum Compounds; D000880:Anthraquinones; D017967:Zinc Compounds; C408124:anthraquinone-2,6-disulfonate