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High-yield Sol-Gel Synthesis of Well-Dispersed, Colorless ZrO(2) Nanocrystals

High-yield Sol-Gel Synthesis of Well-Dispersed, Colorless ZrO(2) Nanocrystals

Mikihisa Mizuno, Yuichi Sasaki, Sungkil Lee, Hitoshi Katakura

Langmuir. 2006 Aug 15;22(17):7137-40.

PMID: 16893205

Abstract:

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP2081121	Zirconium(IV) tert-butoxide		2081-12-1	Price

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