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Fe3+ intercalation/deposition on vermiculites and interaction with pyrrole: a Mössbauer spectroscopic investigation

Published online by Cambridge University Press:  09 July 2018

V. Ramírez-Valle ,
A. Lerf ,
F. E. Wagner ,
J. Poyato  and
J. L. Pérez-Rodríguez
V. Ramírez-Valle*
Affiliation:
Materials Science Institute of Seville, CSIC-US, Av. Américo Vespucio, 49, 41092 Sevilla, Spain
A. Lerf
Affiliation:
Walther Meissner Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany
F. E. Wagner
Affiliation:
Physik Department, Technische Universität München, D-85748 Garching, Germany
J. Poyato
Affiliation:
Materials Science Institute of Seville, CSIC-US, Av. Américo Vespucio, 49, 41092 Sevilla, Spain
J. L. Pérez-Rodríguez
Affiliation:
Materials Science Institute of Seville, CSIC-US, Av. Américo Vespucio, 49, 41092 Sevilla, Spain
*
*E-mail: [email protected]
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Abstract

The Fe3+ uptake from aqueous and methanol solutions of FeCl3·6H2O in two vermiculites from Santa Olalla and Ojén (Spain) and in a montmorillonite from Wyoming has been investigated by Mössbauer spectroscopy at room temperature and 4.2 K. The samples were further characterized by X-ray diffraction. The low temperature Mössbauer spectra reveal the deposition of akaganeite and perhaps some ferrihydrite on the external surface of the clay minerals. The room temperature spectra exhibit two Fe3+ quadrupole doublets in addition to the Fe2+ components of the structural iron in the sheet silicates. On treatment in ⩾0.04 M Fe3+ solutions the Fe3+ quadrupole splittings of 0.90 mm/s and 0.55 mm/s can be assigned to the mineral akaganeite; at smaller Fe3+ concentrations one of these doublets has a quadrupole splitting similar to that of the Fe3+ in the original vermiculites, the other one a quadrupole splitting of 0.6–0.7 mm/s, which can be considered as a hint for an uptake of Fe dimers in the interlayer space irrespective of the solvent used for iron deposition. Preliminary results show that the adsorption of pyrrole in all of our Fe3+-containing samples, regardless of the preparation in aqueous or methanol solution, results in the formation of polypyrrole and a concomitant reduction of some of the Fe3+. An uptake of pyrrole into the interlayer space has been observed only in the Fe3+-containing Wyoming montmorillonite and in the Ojén vermiculite treated with the methanol solution of iron chloride.

Keywords

vermiculitemontmorilloniteferrihydriteakaganeitepyrrolenano-compositeMössbauer spectroscopyXRD
Type
Research Article
Information
Clay Minerals , Volume 43 , Issue 3 , September 2008 , pp. 487 - 499
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2008

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References

Aranda, P., Darder, M., Fernández-Saavedra, R., López-Bianco, M. & Ruiz-Hitzky, E. (2006) Relevance of polymer- and biopolymer-clay nanocomposites in electrochemical and electroanalytical applications. Thin Solid Films, 495, 104–112.Google Scholar
Cornell, R.M. & Schwertmann, U. (1996) The Iron Oxides. Structure, Properties, Reactions, Occurrence and Uses. VCH, Weinheim.Google Scholar
Enzel, P. & Bein, T. (1989) Inclusions of polyaniline filaments in zeolite molecular sieves. Journal of Physical Chemistry, 93, 6270–6272 Google Scholar
Faguy, P.W., Lucas, R.A. & Ma, W. (1995) An FT-LRATR spectroscopic study of the spontaneous polymerization of pyrrole in iron-exchanged montmorillonite. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 105, 105–112.Google Scholar
Flynn, C.M. (1984) Hydrolysis of inorganic iron (III) salts. Chemical Reviews, 84, 31–41.Google Scholar
Helson, J.A. & Goodman, B.A. (1983) Characterization of iron(II)- and iron(III)-exchanged montmorillonite and hectorite using the Mössbauer effect. Clay Minerals, 18, 117–125.Google Scholar
Kalinowski, B. & Schweda, P. (2007) Rates and nonstoichiometry of vermiculite dissolution at 22°C. Geoderma, 142, 197–209.Google Scholar
Kim, B.H., Hong, S.H., Kim, J.W., Choi, H.J. & Joo, J. (2003) EPR signal of nanolayer in conducting polypyrrole (PPy) nanocomposites. Synthetic Metals, 135-136, 771–772.Google Scholar
Kodgire, P., Kalgaonkar, R., Hambir, S., Bulakh, N. & Jog, J.P. (2001) PP/clay nanocomposites: effect of clay treatment on morphology and dynamic mechanical properties. Journal of Applied Polymer Science, 81, 1786–1792.Google Scholar
Letaïef, S., Aranda, P. & Ruiz-Hitzky, E. (2005) Influence of iron in the formation of conductive polypyrroleclay nanocomposites. Applied Clay Science, 28, 183–198.Google Scholar
Liu, Y.-C. & Ger, M.-D. (2002) Modification of electropolymerized polypyrrole with Na+-montmorillonite. Chemical Physics Letters, 362, 491–496.Google Scholar
Mehrotra, V. & Giannelis, P. (1991) Metal-insulator molecular multilayers of electroactive polymers: intercalation of polyaniline in mica-type silicates. Solid State Communications, 77, 155–158.Google Scholar
Mehrotra, V. & Giannelis, P. (1992) Nanometer scale multilayers of electroactive polymers: intercalation of polypyrrole in mica-type silicates. Solid State Ionics, 51, 115–122.Google Scholar
Moreale, A., Cloos, P. & Badot, C. (1985) Differential behaviour of Fe(III)- and Cu(II)-montmorillonite with aniline: I. Suspensions with constant and solid liquid ratio. Clay Minerals, 20, 29–37.Google Scholar
Murad, E. & Johnston, J.H. (1987) Iron oxides and oxyhydroxides. Pp. 507–582 in: Mössbauer Spectroscopy Applied to Inorganic Chemistry (Long, G.J., editor). Vol. 2, Plenum, New York.Google Scholar
Murad, E. & Cashion, J. (2004) Mössbauer Spectroscopy of Environmental Materials and their Industrial Utilization. Kluwer, Dordrecht.Google Scholar
Park, D.P., Sung, J.H., Lim, S.T., Choi, H.J. & Jhon, M.S. (2003) Synthesis and characterization of soluble polypyrrole and polypyrrole/organoclay nanocomposites. Journal of Materials Science Letters, 22, 1299–1302.Google Scholar
Pinnavaia, T.J. & Beall, G.W. (2000) Polymer-Clay Nanocomposites. Wiley, New York.Google Scholar
Pomogailo, A.D. (2005) Hybrid intercalative nanocomposites. Inorganic Materials, 41, 47–74.Google Scholar
Ramírez-Valle, V., Lerf, A., Wagner, F.E., Poyato, J. & Pérez-Rodríguez, J. (2008) Thermal study of polypyrrole complexes with vermiculites of different layer charge. Journal of Thermal Analysis and Calorimetry, 92, 43–51.Google Scholar
Ruiz-Hitzky, E. (1993) Conducting polymers intercalated in layered solids. Advanced Materials, 5, 334–340.Google Scholar
Ruiz-Hitzky, E. & Aranda, P. (2000) Electroactive polymers intercalated in clays and related solids. Pp. 19–46 in: Polymer-Clay Nanocomposites (Pinnavaia, T.J. & Beall, G.W., editors). John Wiley and Sons, New York.Google Scholar
Ruiz-Hitzky, E. & Van Meerbek, A. (2006) Polymer-clay nanocomposites. In: Handbook of Clay Science (Bergaya, F., Theng, B.G.K. & Lagaly, G., editors). Elsevier.Google Scholar
Vertes, A., Korecz, L. & Burger, K. (1979) Mössbauer Spectroscopy. Elsevier, Amsterdam.Google Scholar
Whittig, L.D. & Page, A.L. (1961) Iron adsorption by montmorillonite systems. I. Preliminary studies. Soil Science Society of America Proceedings, 25, 278–281.Google Scholar
Yeh, J.-M., Chin, C.-P. & Chang, S. (2003) Enhanced corrosion protection, coatings prepared from soluble electronically conductive polypyrrole-clay nanocomposite materials. Journal of Applied Polymer Science, 88, 3264–3272.Google Scholar
Yuan, P., He, H., Bergaya, F., Wu, D., Zhou, Q. & Zhu, J. (2006) Synthesis and characterization of delaminated iron-pillared clay with meso-microporous structure. Microporous and Mesoporous Materials, 88, 8–15.Google Scholar