Synthesis of mesoporous hybrid materials for the extraction of anions from water

Abstract

The aim of our work is the preparation, by direct synthesis, of different hybrid materials Si-SBA-15-Cl (Santa Barbara Amorphous), Si-SBA-15-dia, Si-SBA-15-tria, and Si-SBA-15-pho. These materials are tested in the extraction of anions present in water such as nitrate NO3 - .Structural and textural properties, of the obtained materials at different stages of the synthesis were characterized by: X-ray diffraction pattern, nitrogen adsorption-desorption isotherm, elemental analysis, and molecular absorption spectrophotometry by UV-VIS. We have shown that the hybrid materials, Si-SBA-15-dia and Si-SBA-15-tria, conserve a hexagonal pore structure after different chemicals transformations and thus are very effective in the extraction of nitrate present in water.