Temperature Induced Formation of Goethite from Magnetite

Abstract:

Over the past few decades, magnetite nanoparticle has been profusely because of their wide range of applications. The co-precipitation method is the simplest and suitable method for the preparation of this nanoparticle. It goes through several reaction steps for the formation of various phases of magnetic nanoparticles. Goethite (FeO(OH)), is one of the intermediates, and it drastically suppressed with the magnetic properties of the Fe oxide phase. In our study, it was shown that at 30°C temperature pure magnetic nanoparticles is formed. But when precipitation temperature is increase to 80°C, goethite is also present with the magnetite nanoparticle. Hence, it is deduced that precipitation temperature plays a significant role in accelerating goethite phase formation when synthesising magnetite nanoparticle by this precipitation method. Data obtained from Raman spectroscopy and XRD supported the above observation.

• Periodical: Advanced Materials Research (Volume 1109)
• Pages: 191-194
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1109.191
• Online since: June 2015
• Authors: Mohammad Ziaul Karim*, Md. Eaqub Ali, Sharifah Bee Abd Hamid
• Keywords: Co-Precipitation Method, Magnetic Nanoparticles, Magnetite and Goethite, Raman Spectroscopy

References

[1] T. Hyeon, Chemical synthesis of magnetic nanoparticles, Chem Commun (Camb), (2003) 927-934.

[2] H. El Ghandoor, H. Zidan, M.M. Khalil, M. Ismail, Synthesis and some physical properties of magnetite (Fe3O4) nanoparticles, Int. J. Electrochem. Sci, 7 (2012) 5734-5745.

DOI: 10.1016/s1452-3981(23)19655-6

[3] B. Unal, Z. Durmus, H. Kavas, A. Baykal, M. Toprak, Synthesis, conductivity and dielectric characterization of salicylic acid–Fe3O4 nanocomposite, Materials Chemistry and Physics, 123 (2010) 184-190.

DOI: 10.1016/j.matchemphys.2010.03.080

[4] I.J. Bruce, J. Taylor, M. Todd, M.J. Davies, E. Borioni, C. Sangregorio, T. Sen, Synthesis, characterisation and application of silica-magnetite nanocomposites, Journal of Magnetism and Magnetic Materials, 284 (2004) 145-160.

DOI: 10.1016/j.jmmm.2004.06.032

[5] X.Q. Liu, M.D. Kaminski, Y.P. Guan, H.T. Chen, H.Z. Liu, A.J. Rosengart, Preparation and characterization of hydrophobic superparamagnetic magnetite gel, Journal of Magnetism and Magnetic Materials, 306 (2006) 248-253.

DOI: 10.1016/j.jmmm.2006.03.049

[6] S. Asuha, B. Suyala, X. Siqintana, S. Zhao, Direct synthesis of Fe3O4 nanopowder by thermal decomposition of Fe–urea complex and its properties, Journal of Alloys and Compounds, 509 (2011) 2870-2873.

DOI: 10.1016/j.jallcom.2010.11.145

[7] G. Gnanaprakash, S. Mahadevan, T. Jayakumar, P. Kalyanasundaram, J. Philip, B. Raj, Effect of initial pH and temperature of iron salt solutions on formation of magnetite nanoparticles, Materials Chemistry and Physics, 103 (2007) 168-175.

DOI: 10.1016/j.matchemphys.2007.02.011

[8] M. Hanesch, Raman spectroscopy of iron oxides and (oxy)hydroxides at low laser power and possible applications in environmental magnetic studies, Geophysical Journal International, 177 (2009) 941-948.

DOI: 10.1111/j.1365-246x.2009.04122.x

[9] Y.S. Li, J.S. Church, A.L. Woodhead, Infrared and Raman spectroscopic studies on iron oxide magnetic nano-particles and their surface modifications, Journal of Magnetism and Magnetic Materials, 324 (2012) 1543-1550.

DOI: 10.1016/j.jmmm.2011.11.065