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Synthesis of α-Fe2O3 nanoparticles and analyzing the effect of annealing temperature on its properties Cover

Synthesis of α-Fe2O3 nanoparticles and analyzing the effect of annealing temperature on its properties

Open Access
|May 2020

Abstract

α-Fe2O3 nanoparticles were synthesized via co-precipitation technique using ferric and ferrous salts and potassium hydroxide as precipitation agents. The samples were calcined at 350 °C, 550 °C and 750 °C for 3 hours. The obtained iron oxide was characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and dynamic light scattering (DLS). Crystallinity of the sample was studied by X-ray diffraction. SEM micrographs showed nonuniform size distribution of the particles forming agglomerates. TGA analysis revealed trace amount of weight loss and material stability for the samples calcined at temperatures above 500 °C. DLS results indicated that increasing of annealing temperature resulted in reduction of the particle size and more uniform size distribution. At the maximum annealing temperature of 750 °C, the mean diameter of the particles of 100 nm was observed.

DOI: https://doi.org/10.2478/msp-2020-0005 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Language: English
Page range: 116 - 121
Submitted on: Sep 17, 2018
Accepted on: Apr 23, 2019
Published on: May 8, 2020
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2020 Bhargavi Ram Thimmiah, Gobi Nallathambi, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.