High-Yield Sol−Gel Synthesis of Well-Dispersed, Colorless ZrO2 Nanocrystals
| Autor: | Sung-Kil Lee, Hitoshi Katakura, Yuichi Sasaki, Mikihisa Mizuno |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Zirconium
Materials science Zirconium dioxide Inorganic chemistry chemistry.chemical_element Surfaces and Interfaces Condensed Matter Physics Toluene law.invention Hydrolysis Oleic acid chemistry.chemical_compound chemistry Nanocrystal law Electrochemistry General Materials Science Crystallization Spectroscopy Nuclear chemistry Sol-gel |
| Zdroj: | Langmuir. 22:7137-7140 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la060774e |
| Popis: | A 93% high-yield synthesis of well-dispersed, colorless zirconium dioxide (ZrO(2)) nanocrystals is reported. In this synthesis, hydrolysis and condensation reactions of zirconium(IV) tert-butoxide in the presence of oleic acid (100 degrees C) formed ZrO(2) precursors. The ZrO(2) precursors were made of -Zr-O-Zr- networks surrounded by oleic acid molecules. Annealing (280 degrees C) the precursors dispersed in dioctyl ether caused crystallization of the -Zr-O-Zr- networks, thereby generating 4 nm ZrO(2) nanocrystals stabilized with oleic acid. The particles were highly crystalline and tetragonal phase. A dense ZrO(2) nanocrystal dispersion in toluene (280 mg/mL) showed a transmittance of about 90% (3 mm optical path length) in the whole visible region. |
| Databáze: | OpenAIRE |
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