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| To a mixture of Cu(CH3COO)2¡¤H2O (0.02 mol) and Fe(NO3)3¡¤9H2O (0.02 mol) in ethanol (70 mL), triethanolamine (4.5 g) was added. The mixture was stirred for 10 min at room temperature. The organic solvent was evaporated and the resulting solid was placed into clean alumina crucibles and annealed in the presence of air at 500¡£C for 1 h. To obtain the single CuFeO2 NPs, the powder was subsequently annealed at 900¡£C in flowing nitrogen gas at a ramp rate of 5 ¡£C min-1 for 2 h. |
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