Details
| Original language | English |
|---|---|
| Pages (from-to) | 310-317 |
| Number of pages | 8 |
| Journal | SMALL |
| Volume | 3 |
| Issue number | 2 |
| Publication status | Published - Feb 2007 |
Abstract
The crystallization pathway of indium tin oxide nanoparticles during solvothermal synthesis in benzyl alcohol was investigated. The synthesis was stopped after different reaction times in the range of 1-24 h, and the structural and morphological characteristics of the products were analyzed by powder X-ray diffraction, electron microscopy, and UV/Vis spectroscopy. Interestingly, the crystallization mechanism does not proceed along a simple nucleation and growth pathway, but involves a two-step process. In the first 12 h an intermediate phase is formed, which consists of nanocrystallites 3-6 nm in size stabilized by an organic matrix. In this organic-inorganic network the nanoparticles are aligned into superstructures, but without any crystallographic orientation. After 12 h the intermediate phase is abruptly transformed into indium tin oxide nanoparticles with the bixbyite structure and with crystallite sizes of about 10-12 nm. This step is accompanied by the disappearance of the organic phase and the loss of the superstructure.
Keywords
- Crystal growth, Indium tin oxide, Nanoparticles, Self-assembly, Sol-gel processes
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biotechnology
- Materials Science(all)
- Biomaterials
- Chemistry(all)
- Materials Science(all)
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In: SMALL, Vol. 3, No. 2, 02.2007, p. 310-317.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Crystallization of indium tin oxide nanoparticles
T2 - From cooperative behavior to individuality
AU - Ba, Jianhua
AU - Feldhoff, Armin
AU - Rohlfing, Dina Fattakhova
AU - Wark, Michael
AU - Antonietti, Markus
AU - Niederberger, Markus
PY - 2007/2
Y1 - 2007/2
N2 - The crystallization pathway of indium tin oxide nanoparticles during solvothermal synthesis in benzyl alcohol was investigated. The synthesis was stopped after different reaction times in the range of 1-24 h, and the structural and morphological characteristics of the products were analyzed by powder X-ray diffraction, electron microscopy, and UV/Vis spectroscopy. Interestingly, the crystallization mechanism does not proceed along a simple nucleation and growth pathway, but involves a two-step process. In the first 12 h an intermediate phase is formed, which consists of nanocrystallites 3-6 nm in size stabilized by an organic matrix. In this organic-inorganic network the nanoparticles are aligned into superstructures, but without any crystallographic orientation. After 12 h the intermediate phase is abruptly transformed into indium tin oxide nanoparticles with the bixbyite structure and with crystallite sizes of about 10-12 nm. This step is accompanied by the disappearance of the organic phase and the loss of the superstructure.
AB - The crystallization pathway of indium tin oxide nanoparticles during solvothermal synthesis in benzyl alcohol was investigated. The synthesis was stopped after different reaction times in the range of 1-24 h, and the structural and morphological characteristics of the products were analyzed by powder X-ray diffraction, electron microscopy, and UV/Vis spectroscopy. Interestingly, the crystallization mechanism does not proceed along a simple nucleation and growth pathway, but involves a two-step process. In the first 12 h an intermediate phase is formed, which consists of nanocrystallites 3-6 nm in size stabilized by an organic matrix. In this organic-inorganic network the nanoparticles are aligned into superstructures, but without any crystallographic orientation. After 12 h the intermediate phase is abruptly transformed into indium tin oxide nanoparticles with the bixbyite structure and with crystallite sizes of about 10-12 nm. This step is accompanied by the disappearance of the organic phase and the loss of the superstructure.
KW - Crystal growth
KW - Indium tin oxide
KW - Nanoparticles
KW - Self-assembly
KW - Sol-gel processes
UR - http://www.scopus.com/inward/record.url?scp=33847043580&partnerID=8YFLogxK
U2 - 10.1002/smll.200600425
DO - 10.1002/smll.200600425
M3 - Article
C2 - 17199249
AN - SCOPUS:33847043580
VL - 3
SP - 310
EP - 317
JO - SMALL
JF - SMALL
SN - 1613-6810
IS - 2
ER -