Mesoporous Lanthanum Tungstate as a Novel Sorbent for Removal of Heavy Metal Ions from Aqueous Media

Abstract

A supramolecular templating approach to the preparation of mesoporous lanthanum tungstate using lanthanum nitrate and dodecyl sulfate following digestion in sodium tungstate solution is presented. N₂ adsorption desorption measurements have been made to determine the surface area and pore size. Calcined and uncalcined materials have been used to study the sorption behaviour of Cr(III), Cr(VI), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Ag(I), Cd(II), Hg(II), Tl(I) and Pb(II) ions and methyl mercury from aqueous solution.