Self-assembled mesoporous γ-Al2O3 spherical nanoparticles and their efficiency for the removal of arsenic from water

J Hazard Mater. 2012 Jan 30;201-202:170-7. doi: 10.1016/j.jhazmat.2011.11.056. Epub 2011 Nov 25.


We report a highly efficient synthetic strategy for self-assembled mesoporous γ-Al(2)O(3) materials using sodium salicylate as template. The mesoporous γ-Al(2)O(3) samples synthesized following this strategy have high surface areas (231-497 m(2)g(-1)), consist of crystalline tiny spherical nanoparticles of dimensions ca. 2-10nm and showed high affinity for the adsorption of arsenic from the contaminated aqueous solutions. Efficient synthesis strategy, exceptionally high surface area and high adsorption efficiency of these mesoporous γ-Al(2)O(3) materials for the dissolved arsenic from the contaminated aqueous solutions (in the form of oxyanions of arsenic) could find potential utility in the purification of polluted water.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Aluminum Oxide / chemistry*
  • Arsenic / isolation & purification*
  • Groundwater / analysis
  • Microscopy, Electron, Scanning
  • Nanoparticles / chemistry*
  • Porosity
  • Sodium Salicylate / chemistry
  • Surface Properties
  • Water Pollutants, Chemical / isolation & purification*
  • Water Purification / methods*
  • X-Ray Diffraction


  • Water Pollutants, Chemical
  • Aluminum Oxide
  • Arsenic
  • Sodium Salicylate