IRON OXIDE/SILICA (FE:SI AS 1:10 ATOMIC RATIO) COMPOSITE MATERIALS HAVE BEEN PREPARED BY CALCINATION FOR 3 H AT DIFFERENT TEMPERATURES (400–900 °C) OF XEROGEL PRECURSOR OBTAINED VIA A FORMAMIDE MODIFIED SOL–GEL PROCESS. THE PROCESS INVOLVED TEOS AND IRON(III) NITRATE, NITRIC ACID AND FORMAMIDE. GENESIS OF THE COMPOSITE MATERIALS FROM THE XEROGEL PRECURSOR HAS BEEN INVESTIGATED BY TGA, DSC, FTIR, XRD, ... إقراء المزيد