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Article

Rapid Microwave Method for Synthesis of Iron Oxide Particles under Specific Conditions

1
Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia
2
University of Split, Ruđera Boškovića 31, 21000 Split, Croatia
3
Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
4
Division of Materials Physics and Center of Excellence for Advanced Materials and Sensing Devices, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
5
Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia
6
Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
Academic Editors: Boris-Marko Kukovec and Martin Dressel
Crystals 2021, 11(4), 383; https://doi.org/10.3390/cryst11040383
Received: 13 February 2021 / Revised: 24 March 2021 / Accepted: 2 April 2021 / Published: 6 April 2021
(This article belongs to the Special Issue Coordination Polymers)
The advantages of microwave technology over conventionally conducted experiments are numerous. Some of them are reduction in reaction time, a higher degree of process control, repeatability, and work safety. Microwave synthesis routes require a complete description of the experimental details, instrumentation, and design program of a microwave oven used in the experiments. In this work, microwave-assisted hydrothermal synthesis of hematite (α-Fe2O3) particles from 0.1 M FeCl3 solution in highly alkaline media with heating in a microwave oven at continuous microwave emission of 800 W at 150 °C, 200 °C, and 250 °C for 20 min are presented. Also, the influence of the percentage of the addition of a cationic surfactant, cetyltrimethylammonium bromide (CTAB) on the composition, size, and shape of the final product was investigated. The samples precipitated at 150 °C formed a final product consisting of goethite (α-FeOOH) and hematite particles in contrast to the those precipitated at 200 °C and 250 °C where pure hematite phase was obtained. In these synthesis routes, the CTAB caused to slow down the rate of the goethite-to-hematite transformation process at temperatures at 200 °C but did not affect the transformation at 250 °C. View Full-Text
Keywords: microwave-assisted synthesis; hematite; α-Fe2O3 particles; goethite; α-FeOOH particles; cetyltrimethylammonium bromide; FT-IR spectroscopy; powder X-ray diffraction; FE-SEM microwave-assisted synthesis; hematite; α-Fe2O3 particles; goethite; α-FeOOH particles; cetyltrimethylammonium bromide; FT-IR spectroscopy; powder X-ray diffraction; FE-SEM
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MDPI and ACS Style

Mitar, I.; Guć, L.; Soldin, Ž.; Vrankić, M.; Paut, A.; Prkić, A.; Krehula, S. Rapid Microwave Method for Synthesis of Iron Oxide Particles under Specific Conditions. Crystals 2021, 11, 383. https://doi.org/10.3390/cryst11040383

AMA Style

Mitar I, Guć L, Soldin Ž, Vrankić M, Paut A, Prkić A, Krehula S. Rapid Microwave Method for Synthesis of Iron Oxide Particles under Specific Conditions. Crystals. 2021; 11(4):383. https://doi.org/10.3390/cryst11040383

Chicago/Turabian Style

Mitar, Ivana, Lucija Guć, Željka Soldin, Martina Vrankić, Andrea Paut, Ante Prkić, and Stjepko Krehula. 2021. "Rapid Microwave Method for Synthesis of Iron Oxide Particles under Specific Conditions" Crystals 11, no. 4: 383. https://doi.org/10.3390/cryst11040383

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