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FT-IR Characterization of the Acidic and Basic Sites on a Nanostructured Aluminum Nitride Surface

Published online by Cambridge University Press:  10 February 2011

M.-I. Baraton ,
X. Chen  and
K. E. Gonsalves
M.-I. Baraton
Affiliation:
LMCTS, Faculté des Sciences, 123 Av. A. Thomas, F-87060 Limoges cedex (France), baraton@unilim.fr
X. Chen
Affiliation:
Polymer Science Program at the Institute of Materials Science & Department of Chemistry, University of Connecticut, Storrs, CT 06269 (USA)
K. E. Gonsalves
Affiliation:
Polymer Science Program at the Institute of Materials Science & Department of Chemistry, University of Connecticut, Storrs, CT 06269 (USA)
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Abstract

A nanostructured aluminum nitride powder prepared by sol-gel type chemical synthesis is analyzed by Fourier transform infrared spectrometry. The surface acidic and basic sites are probed out by adsorption of several organic molecules. Resulting from the unavoidable presence of oxygen, the aluminum nitride surface is an oxinitride layer in fact, and its surface chemistry should present some analogies with alumina. Therefore, a thorough comparison between the acido-basicity of aluminum nitride and aluminum oxide is discussed. The remaining nitrogen atoms in the first atomic layer modify the acidity-basicity relative balance and reveals the specificity of the aluminum nitride surface.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 454: Symposium S – Advanced Catalytic Materials–1996 , 1996 , 59
Copyright
Copyright © Materials Research Society 1997

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References

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