MIUR (Cofin 2003), CNR, and University of Bologna (Funds for Selected Research Topics) are acknowledged for financial support.
Morphological and Chemical/Physical Characterization of Fe-Doped Synthetic Chrysotile Nanotubes†
Article first published online: 27 MAY 2005
Copyright © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Functional Materials
Volume 15, Issue 6, pages 1009–1016, June, 2005
How to Cite
Foresti, E., Hochella, M. F., Kornishi, H., Lesci, I. G., Madden, A. S., Roveri, N. and Xu, H. (2005), Morphological and Chemical/Physical Characterization of Fe-Doped Synthetic Chrysotile Nanotubes. Adv. Funct. Mater., 15: 1009–1016. doi: 10.1002/adfm.200400355
- Issue published online: 27 MAY 2005
- Article first published online: 27 MAY 2005
- Manuscript Accepted: 3 DEC 2004
- Manuscript Received: 9 AUG 2004
- Nanotubes, inorganic
In the field of thin-layer-structured inorganic nanotubes, morphological, structural, and chemical/physical modifications induced in synthetic stoichiometric chrysotile nanotubes have been evaluated as a function of the extent of Fe doping. Fe-doped synthetic chrysotile nanocrystals have been obtained in the range from 0.29 wt.-% up to 1.37 wt.-% Fe. A partial Fe replacement for Si and Mg has been observed through the modification of Fourier-transform infrared (FTIR) absorption bands. FTIR spectroscopic, X-ray diffraction, and thermogravimetric analyses provide evidence for Fe inclusion into the chrysotile crystal structure, in both octahedral and tetrahedral sites, which induces a flattening of the curved brucite-like layers in the stoichiometric chrysotile. Further characterization by morphological analysis (scanning electron microscopy, transmission electron microscopy, and atomic force microscopy) has revealed the effect of Fe doping on the aggregation of chrysotile nanotubes. The results appear interesting in light of the proposed possibilities of synthetic chrysotile fibers to represent an alternative to carbon nanotubes for innovative technological applications.