Preparation and characterization of LaFe1-xMnxO3 perovskites (0≤ x ≤1) nano scale as an adsorbent to treat water pollution
Abstract
The nanoparticle crystals of perovskite oxides LaFe1-xMnxO3 was prepared by the PVA (polyvinyl alcohol) gel combustion method to determine the adsorption capacity of Pb2+, Cd2+, Fe3+ ions from solution was investigated. Characteristics of fabrication materials are determined by the X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brunaure-Emmet-Teller (BET), vibration sampling magnetometer (VSM), point of zero charge (PPZC) measurements. The results showed that the single crystalline form of perovskite oxides LaFe1-xMnxO3 was formed by the formation of a solid solution between perovskite LaFeO3 and perovskite LaMnO3 with all x (0 ≤ x ≤ 1) values. The results of the adsorption capacity show that the perovskite with the formula LaFe0.3Mn0.7O3 gives the best performance for Pb2+ ions and the perovskite with the formula LaFe0.7Mn0.3O3 gives the best performance for Cd2+, Fe3+ ions. The values saturation magnetization of LaFe1-xMnxO3 perovskite from 6.5 emu.g-1 to 12.0 emu.g-1.
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