Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 8396-8405 |
| Seitenumfang | 10 |
| Fachzeitschrift | CRYSTENGCOMM |
| Jahrgang | 18 |
| Ausgabenummer | 43 |
| Publikationsstatus | Veröffentlicht - 10 Okt. 2016 |
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 TEM measurements of samples withdrawn over the course of the synthesis showed that particles grow from roundish to dendritic shapes during the phase transformation.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.
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Allgemeine Chemie
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
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in: CRYSTENGCOMM, Jahrgang 18, Nr. 43, 10.10.2016, S. 8396-8405.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Fractal growth of ZrO2 nanoparticles induced by synthesis conditions
AU - Stolzenburg, P.
AU - Freytag, A.
AU - Bigall, N. C.
AU - Garnweitner, G.
PY - 2016/10/10
Y1 - 2016/10/10
N2 - 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 TEM measurements of samples withdrawn over the course of the synthesis showed that particles grow from roundish to dendritic shapes during the phase transformation.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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84994247425&partnerID=8YFLogxK
U2 - 10.1039/c6ce01916a
DO - 10.1039/c6ce01916a
M3 - Article
AN - SCOPUS:84994247425
VL - 18
SP - 8396
EP - 8405
JO - CRYSTENGCOMM
JF - CRYSTENGCOMM
SN - 1466-8033
IS - 43
ER -