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Au-Fe nanoalloys were synthesized by the one-pot wet chemical approach. In a typical experiment, Fe(acac)3 (12.5 mM), Au(OOCCH3)3 (37.5 mM) and the reduction agent of 1,2- hexadecanediol (250 mM) were dissolved in 10 ml octyl ether solution with oleic acid (25 mM) and oleyl amine (25 mM). Under vigorous stirring and Ar atmosphere, the reaction mixture was first heated to 80 ºC and homogenized at that temperature for 1 h, then rapidly raised to 280 ºC and refluxed for 1 h to complete the reaction. Subsequently, ethanol was added into the reacted mixture to precipitate the formed nanoparticles (NPs) after cooling down to room temperature. The resulting dark-red product was separated from the supernatant by centrifugation and washed with mixed ethanol/hexane solvents (1:2) twice and redispersed in hexane.
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