Removal of Arsenic (V) from Water Using Hierarchical Flower-Shaped AlOOH/Fe Micro/Nanostructures.

Hierarchical AlOOH/Fe micro/nanostructures with flower-shaped morphology were fabricated by the reaction of Al/Fe nanoparticles with water. Al/Fe bimetallic nanoparticles have been obtained using the method of simultaneous electrical explosion of metal pairs in a nitrogen atmosphere. The nanoparticles are chemically active and interact with water at 60°C forming the flower-shaped hierarchical pore structures with a high specific surface area. Al/Fe product transformations are presented by the flower-shaped pseudoboehmite surrounded by the lamellar structures enriched with ferric oxides. Flower-shaped AlOOH/Fe micro/nanostructure with flower-shaped morphology is found to serve as an effective adsorbent medium to remove As(V) from water. The adsorption capacity was 43 mg/g (pH = 6.7). [ABSTRACT FROM AUTHOR]