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Reverse Micelle Synthesis of Zirconia Powders: The Use of Hydrogen Peroxide as Washing Solvent

Published online by Cambridge University Press:  15 February 2011

Harpreet Singh  and
Olivia A. Graeve
Harpreet Singh
Affiliation:
Metallurgical and Materials Engineering University of Nevada, Reno 1664 N. Virginia Street – Mail Stop 388 Reno, NV 89557
Olivia A. Graeve*
Affiliation:
Metallurgical and Materials Engineering University of Nevada, Reno 1664 N. Virginia Street – Mail Stop 388 Reno, NV 89557
*
#Author to whom correspondence should be addressed. E-mail address: [email protected].
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Abstract

Yttria-stabilized zirconia nanopowders were synthesized using AOT/isooctane reverse micelles. XRD results showed that the powders were tetragonal with crystallite sizes ranging between approximately 1-50 nm depending on the thermal treatment given to the powders. BET surface area analysis of the powders gave a specific surface area of 230 m2/g for the assynthesized powders and 19.3 m2/g for the powders treated at 1000°C. This results in equivalent powder particle diameters of 4 nm and 52 nm, respectively. Washing of the powders is a very significant step for successful post-processing of powders obtained by AOT/isooctane reverse micelles. The use of ethanol and dry ether did not remove AOT, as determined from EDS measurements. Subsequent experiments showed that a novel solvent (hydrogen peroxide) was effective in removing AOT from the powders. The reason for the effectiveness of the new solvent is its capacity to decompose the AOT into weak acids, which are easily washed away with deionized water.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 879: Symposium Z – Chemistry of Nanomaterial Synthesis and Processing , 2005 , Z10.28
Copyright
Copyright © Materials Research Society 2005

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Footnotes

*

Current address: Washington State University. E-mail address: [email protected].

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