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Rapid Preparation Of Spinel Co3O4 Nanocrystals In Aqueous Phase By Microwave Irradiation

Liang Li, Jicun Ren
Published 2006 · Materials Science

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Abstract In this paper, we present a new method for synthesis of water-soluble Co 3 O 4 nanocrystals (NCs) by microwave irradiation with controllable temperature. Spherical or cubic Co 3 O 4 NCs (10–20 nm) were synthesized rapidly within 10 min at 100–140 °C. MPA was used as stabilizer to synthesis Co 3 O 4 NCs in this paper, which leads to the controlled growth and narrow sizes distribution of the NCs. Our results demonstrated that the shape of Co 3 O 4 NCs was reaction temperature-dependent, i.e., low temperature is in favor of the synthesis of spherical NCs, and high temperature is in that of cubic NCs.
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