Sol-Gel Synthesis of Nanoscaled Spinels Using Propylene Oxide as a Gelation Agent
- Cite this article as:
- Cui, H., Zayat, M. & Levy, D. J Sol-Gel Sci Technol (2005) 35: 175. doi:10.1007/s10971-005-4165-0
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Spinel nanoparticles of CoAl2O4 (blue), CoCr2O4 (bluish green), ZnFe2O4 (brown) and CuCr2O4 (black) were synthesized by a sol-gel route with propylene oxide as a gelation agent. This method has proven to be an effective route to synthesize mixed oxide nanoparticles, especially for that with one of metal ion having a formal charge of less than +3. Transmission electron micrographs show the small particle size (less than 60 nm) of the four pigments and their narrow particle size distributions.