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Synthesis of Nanoporous Rutile Nanocrystals under Mild Conditions

Published online by Cambridge University Press:  09 February 2015

Kairat Sabyrov ,
Virany M. Yuwono  and
R. Lee Penn
Kairat Sabyrov
Affiliation:
Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A.
Virany M. Yuwono
Affiliation:
Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, MN 55455, U.S.A.
R. Lee Penn*
Affiliation:
Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, MN 55455, U.S.A.
*
*Email: rleepenn@umn.edu
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Abstract

Single-crystalline rutile with porous and complex structure can be produced by tuning reaction conditions so as to maintain low titania solubility. X-ray diffraction, high-resolution transmission electron microscopy, and cryogenic transmission electron microscopy results are consistent with the hypothesis that oriented aggregation of anatase crystals precedes rutile nucleation and growth from anatase nanocrystal interfaces. The product rutile retains morphological and microstructure features consistent with an aggregation-based phase transformation because coarsening, or monomer-by-monomer growth, is suppressed under these conditions of low titania solubility.

Keywords

nucleation & growthphase transformationnanostructure
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1721: Symposium E – Hard-Soft Interfaces in Biological and Bioinspired Materials—Bridging the Gap between Theory and Experiment , 2015 , mrsf14-1721-e02-06
Copyright
Copyright © Materials Research Society 2015 

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References

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