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

Journal of hazardous materials (2011-12-16)
Astam K Patra, Arghya Dutta, Asim Bhaumik
ABSTRACT

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.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Sodium salicylate, puriss. p.a., reag. Ph. Eur., 99.5-101.0% (calc. to the dried substance)
Sigma-Aldrich
Sodium salicylate, puriss. p.a., ≥99.5% (NT)
Sigma-Aldrich
Sodium salicylate, tested according to Ph. Eur.
Sigma-Aldrich
Sodium salicylate, meets USP testing specifications
Sigma-Aldrich
Sodium salicylate, ReagentPlus®, ≥99.5%