Synthesis and characterization of magnetite-maghemite nanoparticles obtained by the high-energy ball milling method

Synthesis and characterization of magnetite-maghemite nanoparticles obtained by the high-energy... We present the process of synthesis and characterization of magnetite-maghemite nanoparticles by the ball milling method. The particles were synthesized in a planetary ball mill equipped with vials and balls of tempered steel, employing dry and wet conditions. For dry milling, we employed microstructured analytical-grade hematite (α-Fe2O3), while for wet milling, we mixed hematite and deionized water. Milling products were characterized by X-ray diffraction, transmission electron microscopy, room temperature Mössbauer spectroscopy, vibrating sample magnetometry, and atomic absorption spectroscopy. The Mössbauer spectrum of the dry milling product was well fitted with two sextets of hematite, while the spectrum of the wet milling product was well fitted with three sextets of spinel phase. X-ray measurements confirmed the phases identified by Mössbauer spectroscopy in both milling conditions and a reduction in the crystallinity of the dry milling product. TEM measurements showed that the products of dry milling for 100 h and wet milling for 24 h consist of aggregates of nanoparticles distributed in size, with mean particle size of 10 and 15 nm, respectively. Magnetization measurements of the wet milling product showed little coercivity and a saturation magnetization around 69 emu g−1, characteristic of a nano-spinel system. Atomic absorption measurements showed that the chromium contamination in the wet milling product is approximately two orders of magnitude greater than that found in the dry milling product for 24 h, indicating that the material of the milling bodies, liberated more widely in wet conditions, plays an important role in the conversion hematite-spinel phase. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Nanoparticle Research Springer Journals

Synthesis and characterization of magnetite-maghemite nanoparticles obtained by the high-energy ball milling method

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Publisher
Springer Netherlands
Copyright
Copyright © 2018 by Springer Science+Business Media B.V., part of Springer Nature
Subject
Materials Science; Nanotechnology; Inorganic Chemistry; Characterization and Evaluation of Materials; Physical Chemistry; Optics, Lasers, Photonics, Optical Devices
ISSN
1388-0764
eISSN
1572-896X
D.O.I.
10.1007/s11051-018-4166-x
Publisher site
See Article on Publisher Site

Abstract

We present the process of synthesis and characterization of magnetite-maghemite nanoparticles by the ball milling method. The particles were synthesized in a planetary ball mill equipped with vials and balls of tempered steel, employing dry and wet conditions. For dry milling, we employed microstructured analytical-grade hematite (α-Fe2O3), while for wet milling, we mixed hematite and deionized water. Milling products were characterized by X-ray diffraction, transmission electron microscopy, room temperature Mössbauer spectroscopy, vibrating sample magnetometry, and atomic absorption spectroscopy. The Mössbauer spectrum of the dry milling product was well fitted with two sextets of hematite, while the spectrum of the wet milling product was well fitted with three sextets of spinel phase. X-ray measurements confirmed the phases identified by Mössbauer spectroscopy in both milling conditions and a reduction in the crystallinity of the dry milling product. TEM measurements showed that the products of dry milling for 100 h and wet milling for 24 h consist of aggregates of nanoparticles distributed in size, with mean particle size of 10 and 15 nm, respectively. Magnetization measurements of the wet milling product showed little coercivity and a saturation magnetization around 69 emu g−1, characteristic of a nano-spinel system. Atomic absorption measurements showed that the chromium contamination in the wet milling product is approximately two orders of magnitude greater than that found in the dry milling product for 24 h, indicating that the material of the milling bodies, liberated more widely in wet conditions, plays an important role in the conversion hematite-spinel phase.

Journal

Journal of Nanoparticle Research – Springer Journals

Published: Mar 13, 2018

References

  • Determination of para-and ferromagnetic components of magnetization and magnetoresistance of granular Co/Ag films (invited)
    Beth, M; Cheng, Y
  • Effect of milling time on the synthesis of magnetite nanoparticles by wet milling
    Can, MM; Ozcan, SC; Ceylan, A; Firat, T
  • Synthesis, characterization, and magnetic properties of Fe3O4 thin films prepared via a sol–gel method
    Chang, HSW; Chiou, C; Chen, Y; Sheen, SR
  • Microstructure and magnetic properties of iron oxide thin films by solid reaction
    Chiba, M; Morio, K; Koizumi, Y
  • Soft magnetic nanocrystalline powders produced by mechanical alloying routes
    Chicinas, I
  • Synthesis of magnetite nanoparticles by high energy ball milling
    Carvalho, JF; Medeiros, SN; Morales, MA; Dantas, AL; Carric, AS
  • Powder X: Windows-95-based program for powder X-ray diffraction data processing
    Dong, C
  • Paintings pigmented with doped magnetite: preliminary evaluation of anticorrosive properties
    Escobar, DM; Arroyave, C; Calderón, J; Margarit, I; Mattos, O
  • Magnetoelectric properties of magnetite thin films
    Feng, JSY; Pashley, RD; Nicolet, M
  • Novel mechanochemical process for synthesis of magnetite nanoparticles using coprecipitation method
    Iwasaki, T; Kosaka, K; Yabuuchi, T; Watano, S; Yanagida, T; Kawai, T
  • Novel environmentally friendly synthesis of superparamagnetic magnetite nanoparticles using mechanochemical effect
    Iwasaki, T; Kosaka, K; Watano, S; Yanagida, T; Kawai, T
  • Preparation of Fe3O4 and α-Fe2O3 powders by magnetomechanical activation of hematite
    Kaczmarek, WA; Ninham, BW
  • Existence of a direct phase transformation from hematite to maghemite
    Meillon, S; Dammak, H; Flavin, E; Pascard, H
  • Modified Scherrer equation to estimate more accurately nano-crystallite size using XRD
    Monshi, A; Foroughi, MR; Monshi, MR
  • Synthesis and characterization of Cu2+ substituted magnetite
    Morales, AL; Velásquez, AA; Urquijo, JP; Baggio, E
  • Effect of crystal defects and internal stress on the domain structure and magnetic properties of magnetite
    Özdemir, O; Dunlop, DJ
  • Structural and magnetic properties of monophasic maghemite (γ-Fe2O3) nanocrystalline powder
    Ramos, JA; Martínez, AI; Osorio, A; Valladares, L; León, L; Bustamante, A
  • Direct phase transformation from hematite to maghemite during high energy ball milling
    Randrianantoandro, N; Mercier, AM; Hervieu, M; Greneche, JM
  • Inception of transformation of hematite to magnetite during mechanical activation: a thermodynamical approach
    Sahebary, M; Raygan, S; Seyed, SA; Abdizadeh, H
  • The high impact of a milling atmosphere on steel contamination
    Štefanić, G; Krehula, S; Štefanić, I
  • Phase development during high-energy ball-milling of zinc oxide and iron—the impact of grain size on the source and the degree of contamination
    Štefanić, G; Krehula, S; Štefanić, I
  • Mössbauer spectroscopy and applications in geology. International training centre for post-graduate soil scientists
    Vandenberghe, RE
  • On the methodology of the analysis of Mössbauer spectra
    Vandenberghe, RE; Grave, E; Bakker, PMA
  • Design and construction of an autonomous control system for Mössbauer spectrometry
    Velásquez, AA; Trujillo, JM; Morales, AL; Tobón, JE; Reyes, L; Gancedo, R
  • The ball milling induced transformation of α-Fe2O3 powder in air and oxygen atmosphere
    Zdujić, M; Jovalekić, C; Karanović, L; Mitrić, M

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