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A novel method for synthesis of Co–Al layered double hydroxides and their conversions to mesoporous CoAl 2 O 4 nanostructures for applications in adsorption removal of fluoride ions

Microporous and Mesoporous Materials, ISSN: 1387-1811, Vol: 201, Issue: C, Page: 91-98
2015
  • 55
    Citations
  • 0
    Usage
  • 60
    Captures
  • 0
    Mentions
  • 0
    Social Media
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Metrics Details

  • Citations
    55
    • Citation Indexes
      55
  • Captures
    60

Article Description

Facile micro-emulsion methods have been developed to synthesize mesoporous Co–Al hydroxide carbonates with rodlike and hexagonal sheetlike morphologies. A series of samples with different molar ratio of cobalt/aluminum were prepared to investigate the impact of cobalt content. Employing transmission electron microscopy, X-ray diffraction analysis and Fourier transformed infrared spectra, the morphology, structure and composition of the products were investigated. Characterized by gas-sorption measurements, the specific surface area of the calcined S-10 sample with the rodlike morphology was as high as 379 m 2 /g, which provided this material porosity properties and outstanding fluoride removal efficiency as high as 95.6%. The sorptive removal capacity of fluoride from aqueous solutions by the precursors and their corresponding annealed products was investigated in a batch mode. Also, the adsorption kinetics and isotherms were discussed.

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