Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 7, Pages 4795-4802Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b00743
Keywords
zirconium oxide; titanium oxide; colloidal nanoparticles; one-pot synthesis; high refractive index nanocomposites
Funding
- Department of Defense, Defense Threat Reduction Agency [HDTRA1-14-1-0032:P00001]
- NIH [1S10RR23057]
- CNSI at UCLA
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Zirconium oxide nanoparticles are promising candidates for optical engineering, photocatalysis, and high-K dielectrics. However, reported synthetic methods for the colloidal zirconium oxide nanoparticles use unstable alkoxide precursors and have various other drawbacks, limiting their wide application. Here, we report a facile one-pot method for the synthesis of colloidally stable zirconium oxide nanoparticles. Using a simple solution of zirconium trifluoroacetate in oleylamine, highly stable zirconium oxide nanoparticles have been synthesized with high yield, following a proposed amidization-assisted sol gel mechanism. The nanoparticles can be readily dispersed in nonpolar solvents, forming a long-term stable transparent solution, which can be further used to fabricate high-refractive-index nanocomposites in both monolith and thin-film forms. In addition, the same method has also been extended to the synthesis of titanium oxide nanoparticles, demonstrating its general applicability to all group IVB metal oxide nanoparticles.
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