Synthesis and adsorption properties of nanosized Mg-Al layered double hydroxides with Cl -, NO - 3 or SO 2 4 - as interlayer anion

T. Hongo*, H. Wakasa, A. Yamazaki

*この研究の対応する著者

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Nanosized Mg-Al layered double hydroxides (LDHs) with Cl -, NO - 3 or SO4 as the interlayer anion have been synthesized by a modified coprecipitation method. The obtained LDHs were confirmed to be composed of a single phase and to be highly substituted by Al (Mg/Al ratio ∼1.9). The abilities of the LDHs to adsorb several harmful anions (F -, CrO 4 2-, HAsO 4 2- and HSeO 3-) in aqueous solution were studied. The LDHs exhibit high adsorption abilities. The amount of adsorption onto the LDHs differed between the starting interlayer anions, and decreased in the following order of the interlayer anions: NO 3 - > Cl - > SO 4 2-. The NO 3-formed Mg-Al LDH reached a CrO 4 2- adsorption equilibrium state within only 30 min, much faster than those in previous reports. Thus, the nanocrystallized, highly Al substituted phase of the NO 3-formed Mg-Al LDH is found to markedly enhance the anion adsorption ability.

本文言語English
ページ(範囲)86-91
ページ数6
ジャーナルMaterials Science- Poland
29
2
DOI
出版ステータスPublished - 2011 6月 1

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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