Preparation of Mg-Al layered double hydroxides intercalated with 1,3,6-naphthalenetrisulfonate and 3-amino-2,7-naphthalenedisulfonate and assessment of their selective uptake of aromatic compounds from aqueous solutions

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Abstract

Mg-Al layered double hydroxides (Mg-Al LDHs) intercalated with 1,3,6-naphthalenetrisulfonate (NTS3-) and 3-amino-2,7-naphthalenedisulfonate (ANDS2-) ions were prepared by coprecipitation and were characterized by X-ray diffraction and chemical analyses. Based on X-ray diffraction patterns, the naphthalene rings of NTS3- and ANDS2- were most likely oriented parallel to the brucite-like host layers of the Mg-Al LDH, midway between layers. The prepared Mg-Al LDHs were able to selectively take up aromatics from aqueous solutions, and the order of percentage uptake was as follows: 1,3-dinitrobenzene > nitrobenzene > benzaldehyde > N,N-dimethylaniline > anisole > 1,2-dimethoxybenzene. The differences in the extent of π-π stacking interactions occurring between the benzene rings of the aromatics and the naphthalene ring of the intercalated NTS3- and ANDS2- probably resulted in these differences among the absorbed quantities of the various aromatics.

Original languageEnglish
Pages (from-to)946-951
Number of pages6
JournalSolid State Sciences
Volume12
Issue number5
DOIs
Publication statusPublished - 2010 May 1

Keywords

  • 1,3,6-Naphthalenetrisulfonate
  • 3-Amino-2,7-naphthalenedisulfonate
  • Magnesium-aluminum layered double hydroxide
  • Preparation
  • Selective uptake

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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