Ferricoxychloride and Hematite Nanoparticles: Synthesis and Phase Transformation

Article Preview

Abstract:

A synthetic procedure based on thermal hydrolysis of iron(III) chloride solutions for the preparation of hematite (α-Fe2O3) and ferricoxychloride (FeOCl) colloids consisting of nanoparticles (NPs) is described. Transmission electron microscopy indicated that both colloids consisted of particles smaller than 10 nm. X-ray diffraction measurements revealed transformation of FeOCl NPs into α-Fe2O3 NPs after a few months. The phase transformation was explained in terms of redissolution – recrystallization process. UV-vis spectroscopy was used for precise determination of the band gap of α-Fe2O3.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

63-66

Citation:

Online since:

July 2006

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2006 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] E. Matijević: Langmuir Vol. 2 (1986), p.12.

Google Scholar

[2] E. Matijević: Chem. Mater. Vol. 5 (1993), p.412.

Google Scholar

[3] E. Matijević: Langmuir Vol. 10 (1994), p.8.

Google Scholar

[4] G.R. Patzke, F. Krumeich and R. Nesper: Angew. Chem. Int. Ed. Vol. 41 (2002), p.2446.

Google Scholar

[5] T. Bein, M. Tielen and P.A. Jacobs: Ber. Bunsen-Ges. Phys. Chem. Vol. 90 (1986), p.395.

Google Scholar

[6] C.R. Mayer, V. Cabuil, T. Lalot and R. Thouvenot: Angew. Chem. Int. Ed. Vol. 38 (1999), p.3672.

Google Scholar

[7] D. Horvath, L. Toth and L. Guczi: Catal. Lett. Vol. 67 (2000), p.117.

Google Scholar

[8] R.D. McMicheal, R.D. Shull, L.J. Swartzendruber, L.H. Bennett and R.E.J. Watson: Magn. Magn. Mater. Vol. 111 (1992), p.29.

Google Scholar

[9] K.A. Gschneidner and V.K. Pecharsky: J. Appl. Phys. Vol. 85 (1999), p.5365.

Google Scholar

[10] V. Djoković and J.M. Nedeljković: Macromol. Rapid Commun. Vol. 21 (2000), p.994.

Google Scholar

[11] K.N. Brusov and O.G. Usyarov: Kolloidn. Zh. Vol. 50 (1988), p.627.

Google Scholar

[12] S.K. Milonjić, N.B. Vučić and S.I. Vujošević: Sep. Sci. Technol. Vol. 31 (1996), p.1515.

Google Scholar

[13] K. Kandori, Y. Kawashima and T. Ishikawa: J. Chem. Soc., Faraday Trans. Vol. 87 (1991), p.2241.

Google Scholar

[14] S. Kan, X. Zhang, S. Yu, D. Li, L. Xiao, G. Zou, T. Li, W. Dong and Y. Lu: J. Colloid Interface Sci. Vol. 191 (1997), p.503.

Google Scholar

[15] S. Hamada and E. Matijević: J. Chem. Soc., Faraday Trans. Vol. 178 (1982), p.2147.

Google Scholar

[16] J.K. Bailey, C.J. Brinker and M.L. Mecartney: J. Colloid Interface Sci. Vol. 157 (1993), p.1.

Google Scholar

[17] T. Sugimoto, K. Sakata and A. Muramatsu: J. Colloid Interface Sci. Vol. 159 (1993), p.372.

Google Scholar

[18] F.P. Koffyberg, K. Dwight and A. Wold: Solid State Comm. Vol. 30 (1979), p.433.

Google Scholar

[19] H.H. Kung, H.S. Jarrett, A.W. Sleight and A. Ferretti: J. Appl. Phys. Vol. 48 (1977), p.2463.

Google Scholar

[20] T. Rajh, L.X. Chen, K. Lukas, T. Liu, M.C. Thurnauer and D.M. Tiede: J. Phys. Chem. B Vol. 106 (2002), p.10543.

Google Scholar

[21] Z. Zhang, C. Boxall and G.H. Kelsall: Colloids and Surfaces A: Physicochem. Eng. Aspects Vol. 73 (1993), p.145.

Google Scholar