Details
| Original language | English |
|---|---|
| Pages (from-to) | 3123-3130 |
| Number of pages | 8 |
| Journal | Journal of Physical Chemistry Letters |
| Volume | 7 |
| Issue number | 16 |
| Publication status | Published - 2016 |
| Externally published | Yes |
Abstract
A molecular understanding of the formation of solid phases from solution would be beneficial for various scientific fields. However, nucleation pathways are still not fully understood, whereby the case of iron (oxyhydr)oxides poses a prime example. We show that in the prenucleation regime, thermodynamically stable solute species up to a few nanometers in size are observed, which meet the definition of prenucleation clusters. Nucleation then is not governed by a critical size, but rather by the dynamics of the clusters that are forming at the distinct nucleation stages, based on the chemistry of the linkages within the clusters. This resolves a longstanding debate in the field of iron oxide nucleation, and the results may generally apply to oxides forming via hydrolysis and condensation. The (molecular) understanding of the chemical basis of phase separation is paramount for, e.g., tailoring size, shape and structure of novel nanocrystalline materials.
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Journal of Physical Chemistry Letters, Vol. 7, No. 16, 2016, p. 3123-3130.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The Molecular Mechanism of Iron(III) Oxide Nucleation
AU - Scheck, Johanna
AU - Wu, Baohu
AU - Drechsler, Markus
AU - Rosenberg, Rose
AU - Van Driessche, Alexander E. S.
AU - Stawski, Tomasz M.
AU - Gebauer, Denis
N1 - Publisher Copyright: © 2016 American Chemical Society.
PY - 2016
Y1 - 2016
N2 - A molecular understanding of the formation of solid phases from solution would be beneficial for various scientific fields. However, nucleation pathways are still not fully understood, whereby the case of iron (oxyhydr)oxides poses a prime example. We show that in the prenucleation regime, thermodynamically stable solute species up to a few nanometers in size are observed, which meet the definition of prenucleation clusters. Nucleation then is not governed by a critical size, but rather by the dynamics of the clusters that are forming at the distinct nucleation stages, based on the chemistry of the linkages within the clusters. This resolves a longstanding debate in the field of iron oxide nucleation, and the results may generally apply to oxides forming via hydrolysis and condensation. The (molecular) understanding of the chemical basis of phase separation is paramount for, e.g., tailoring size, shape and structure of novel nanocrystalline materials.
AB - A molecular understanding of the formation of solid phases from solution would be beneficial for various scientific fields. However, nucleation pathways are still not fully understood, whereby the case of iron (oxyhydr)oxides poses a prime example. We show that in the prenucleation regime, thermodynamically stable solute species up to a few nanometers in size are observed, which meet the definition of prenucleation clusters. Nucleation then is not governed by a critical size, but rather by the dynamics of the clusters that are forming at the distinct nucleation stages, based on the chemistry of the linkages within the clusters. This resolves a longstanding debate in the field of iron oxide nucleation, and the results may generally apply to oxides forming via hydrolysis and condensation. The (molecular) understanding of the chemical basis of phase separation is paramount for, e.g., tailoring size, shape and structure of novel nanocrystalline materials.
UR - http://www.scopus.com/inward/record.url?scp=84983292974&partnerID=8YFLogxK
U2 - 10.1021/acs.jpclett.6b01237
DO - 10.1021/acs.jpclett.6b01237
M3 - Article
VL - 7
SP - 3123
EP - 3130
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
SN - 1948-7185
IS - 16
ER -