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Conventional and microwave hydrothermal synthesis of monodispersed metal oxide nanoparticles at liquid-liquid interface
Citation:
Baruwati, B. AND R. S. VARMA. Conventional and microwave hydrothermal synthesis of monodispersed metal oxide nanoparticles at liquid-liquid interface. Presented at 237th American Chemical Society National Meeting, Salt Lake City, UT, March 22 - 26, 2009.
Impact/Purpose:
To inform the public
Description:
Monodispersed nanoparticles of metal oxide including ferrites MFe2O4 (M=, Ni, Co, Mn) and γ-Fe2O3, Ta2O5 etc. have been synthesized using a water-toluene interface under both conventional and microwave hydrothermal conditions. This general synthesis procedure uses readily available and inexpensive chloride or nitrate salts as precursors and the method can be adopted for large scale synthesis of many metal oxides. The particle sizes are found to be in the size range 8-10 nm with spherical shape and retain their morphology even on large scale synthesis. The synthesis and post synthetic surface functionalization of as-synthesized nanoparticles will be described which renders them water dispersible for various applications.
