SOLID HEXA- AND OCTACYANOMETALLATE NANOCOMPOSITE MATERIAL, METHOD FOR PREPARING SAME, AND METHOD FOR FIXING INORGANIC POLLUTANTS IMPLEMENTING SAME

摘要

The invention relates to a solid nanocomposite material including: nanoparticles of a metal coordination polymer with CN ligands including Mn+ cations, where M is a transition metal, and n is 2 or 3; and [M' (CN)m]x- anions, where M' is a transition metal, x is 3 or 4, and m is 6 or 8; said Mn+ cations of the coordination polymer being bonded by an organometallic bond to an organic group of an organic graft chemically bonded to the inside of the pores of a porous glass medium. The invention also relates to a method for preparing said material, to a method for fixing an inorganic pollutant, such as radioactive caesium, contained in a solution by placing said solution in contact with said material.