DSpace at IIT Bombay >
IITB Publications >
Proceedings papers >
Please use this identifier to cite or link to this item:
|Title: ||Coexistence of paramagnetic and superparamagnetic Fe(III) in mesoporous MCM-41 silicates|
|Authors: ||SELVAM, P|
|Keywords: ||iron-containing mcm-41|
|Issue Date: ||2001|
|Publisher: ||ELSEVIER SCIENCE BV|
|Citation: ||CATALYSIS TODAY,68,69-74|
|Abstract: ||In the present study, we demonstrate the coexistence of paramagnetic and superparamagnetic Fe(III) in mesoporous MCM-41 matrix. The loading of trivalent iron in MCM-41 not only results in the formation of iron oxide nanoclusters in the mesovoids, but also substitutes (isomorphously) in the silicate matrix. The resulting non-framework and framework Fe(III) exhibit superparamagnetic and paramagnetic properties, respectively. The dual behaviour of Fe(III) in MCM-41 is deduced using various analytical and spectroscopic techniques, viz. X-ray diffraction (XRD), diffuse reflectance ultraviolet-visible (DRUV-VIS), electron paramagnetic resonance (EPR) and Mossbauer spectroscopy. (C) 2001 Elsevier Science B.V. All rights reserved.|
|Appears in Collections:||Proceedings papers|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.