Schlicker, L. ; Riedel, R. ; Gurlo, A. (2009)
Indium hydroxide to bixbyite-type indium oxide transition probedin situby time resolved synchrotron radiation.
In: Nanotechnology, 20 (49)
doi: 10.1088/0957-4484/20/49/495702
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The understanding of the transformation mechanism involved in the dehydroxylation reactions in the In–O–H system exhibits large controversy and discrepancy; it holds especially for the formation of the metastable nanosized intermediates as well as for the structural relation between corresponding phases. It was recently reported that indium oxohydroxide (InOOH) appears as an intermediate phase in the thermal dehydroxylation of nanoscaled In(OH)3. Our in situ time resolved high energy synchrotron radiation experiments showed unambiguously that no intermediate crystalline or amorphous phases have been observed during the phase transition (dehydroxylation) from nanosized indium hydroxide to indium oxide. Under our experimental conditions, the c-In(OH)3 to bixbyite-type In2O3 transition was observed between 280 and 305 ◦C and the conversion completed around 305 ◦C without any observable intermediates. The formation of InOOH during the phase transition In(OH)3 → bixbyite-type In2O3 can be ruled out. This finding is of high relevance and importance for the controllable synthesis of nanocrystalline In2O3-based materials.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2009 |
| Autor(en): | Schlicker, L. ; Riedel, R. ; Gurlo, A. |
| Art des Eintrags: | Bibliographie |
| Titel: | Indium hydroxide to bixbyite-type indium oxide transition probedin situby time resolved synchrotron radiation |
| Sprache: | Englisch |
| Publikationsjahr: | 6 November 2009 |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nanotechnology |
| Jahrgang/Volume einer Zeitschrift: | 20 |
| (Heft-)Nummer: | 49 |
| DOI: | 10.1088/0957-4484/20/49/495702 |
| Kurzbeschreibung (Abstract): | The understanding of the transformation mechanism involved in the dehydroxylation reactions in the In–O–H system exhibits large controversy and discrepancy; it holds especially for the formation of the metastable nanosized intermediates as well as for the structural relation between corresponding phases. It was recently reported that indium oxohydroxide (InOOH) appears as an intermediate phase in the thermal dehydroxylation of nanoscaled In(OH)3. Our in situ time resolved high energy synchrotron radiation experiments showed unambiguously that no intermediate crystalline or amorphous phases have been observed during the phase transition (dehydroxylation) from nanosized indium hydroxide to indium oxide. Under our experimental conditions, the c-In(OH)3 to bixbyite-type In2O3 transition was observed between 280 and 305 ◦C and the conversion completed around 305 ◦C without any observable intermediates. The formation of InOOH during the phase transition In(OH)3 → bixbyite-type In2O3 can be ruled out. This finding is of high relevance and importance for the controllable synthesis of nanocrystalline In2O3-based materials. |
| Freie Schlagworte: | Nanoscale science and low-D systems, Condensed matter: structural, mechanical & thermal, Chemical physics and physical chemistry |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe |
| Hinterlegungsdatum: | 13 Apr 2012 09:30 |
| Letzte Änderung: | 26 Sep 2018 12:37 |
| PPN: | |
| Sponsoren: | We thank the Fonds der Chemischen Industrie (Frankfurt, Germany) ., DFG Priority Program 1236 ‘Oxides, carbides and nitrides at extremely high pressures and temperatures’, DFG Priority Program 1299 ‘Adapting surfaces for high temperature applications’, We thank the ESRF (Grenoble, France, experiment MA-695) for the financial support. |
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