Evaluation of the Efficiency of Detection and Capture of Manganese in Aqueous Solutions of FeCeO Nanocomposites Doped with NbO

Overview

Journal Sensors (Basel)

Publisher MDPI

Specialty Biotechnology

Date 2020 Sep 2

PMID 32867214

Citations 19

Authors

Artem Kozlovskiy

Kamila Egizbek

Maxim V Zdorovets

Milana Ibragimova

Alena Shumskaya

Alexandr A Rogachev

Zhanna V Ignatovich

Kayrat Kadyrzhanov

Affiliations

Soon will be listed here.

Abstract

The main purpose of this work is to study the effectiveness of using FeCeO nanocomposites doped with NbO for the purification of aqueous solutions from manganese. X-ray diffraction, energy-dispersive analysis, scanning electron microscopy, vibrational magnetic spectroscopy, and mössbauer spectroscopy were used as research methods. It is shown that an increase in the dopant concentration leads to the transformation of the shape of nanoparticles from spherical to cubic and rhombic, followed by an increase in the size of the nanoparticles. The spherical shape of the nanoparticles is characteristic of a structure consisting of a mixture of two phases of hematite (FeO) and cerium oxide CeO. The cubic shape of nanoparticles is typical for spinel-type FeNbO structures, the phase contribution of which increases with increasing dopant concentration. It is shown that doping leads not only to a decrease in the concentration of manganese in model solutions, but also to an increase in the efficiency of adsorption from 11% to 75%.

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