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Sol-Gel Synthesis of Nanoscaled Spinels Using Propylene Oxide
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Sol-Gel Synthesis of Nanoscaled Spinels Using Propylene Oxide as a Gelation Agent HONGTAO CUI, MARCOS ZAYAT AND DAVID LEVY∗ Instituto de Ciencia de Materiales de Madrid, C.S.I.C, 28049 Cantoblanco, Madrid, Spain htcui@icmm.csic.es marcos.Zayat@icmm.csic.es d.levy@icmm.csic.es Received October 14, 2004; Accepted March 31, 2005 Abstract. 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. http://www.namipan.com/d/b8a93ab152cc4d439e0a119cef5b2c5da3d3d76c455a1700 [ Last edited by a410731466 on 2009-2-17 at 19:21 ] |
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