Fractal growth of ZrO2 nanoparticles induced by synthesis conditions
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Original version
Stolzenburg, P.; Freytag, A.; Bigall, N.C.; Garnweitner, G.: Fractal growth of ZrO2 nanoparticles induced by synthesis conditions. In: CrystEngComm 18 (2016), Nr. 43, S. 8396-8405. DOI:
https://doi.org/10.1039/c6ce01916a
Repository version
To cite the version in the repository, please use this identifier:
https://doi.org/10.15488/2168
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Abstract:
Strong changes in morphology and phase composition of zirconia nanoparticles can be induced by altering the growth conditions during nanoparticle synthesis. Here, we demonstrate that fractal ZrO2 nanocrystals showing high specific surface area can be obtained in the nonaqueous synthesis by variation of temperature and precursor concentration. The growth process was studied in detail revealing a size increase from 2.7 to 7 nm as well as a change in the polymorphic composition from tetragonal to monoclinic zirconia. TEM measurements of samples withdrawn over the course of the synthesis showed that particles grow from roundish to dendritic shapes during the phase transformation. In contrast to the common assumption that the phase transition is controlled by thermodynamics, our data shows that the transition is rather governed by kinetics. © The Royal Society of Chemistry 2016.
License of this version:
CC BY-NC 3.0 Unported -
https://creativecommons.org/licenses/by-nc/3.0/
Publication type:
Article
Publishing status:
publishedVersion
Publication date:
2016
Keywords english:
ZrO2
,
nanoparticles
,
fractal growth
DDC:
540 | Chemie
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