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liu355

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[ÇóÖú] ÄÉÃ׺ϽðµÄºÏ³É

°´ÕÕÎÄÏ×Low-temperature solution synthesis of the non-equilibrium ordered intermetallic compounds Au3Fe, Au3Co, and Au3Ni as nanocrystals×öAu3NiÄÉÃ׺Ͻð£¬Ïêϸ²½ÖèÊÇThe synthesis was modified from a procedure published by Zhou
et al. 8 In a typical reaction, HAuCl 4 ¡¤ 3H 2 O (10.0 mg), oleylamine
(50 ¦ÌL), and the appropriate amount of Fe(acac) 3 , Co(acac) 2 , or
Ni(acac) 2 to yield a 3:1 molar ratio were added to 5 mL of octyl
ether and heated to 80 ¡ãC under Ar. Then, 0.7 mL of 2.81 M
n-butyllithium was added quickly via syringe to 10 mL of octyl
ether, also at 80 ¡ãC and under Ar. Finally, the 5-mL octyl ether
metal salt solution at 80 ¡ãC was added quickly via syringe. The
reaction mixture was heated to 250 ¡ãC, the heat was turned off,
and the sample was cooled to room temperature. The product was
isolated by adding 10 mL of ethanol, centrifuging at 13 krpm, then
extracting into the toluene layer of a toluene/water mixture.
Ò©Æ·µÄÁ¿Êǰ´ÕÕAu£ºNi=3£º1µÄÁ¿¼ÓµÄ£¬µ«ÊÇ×ö³öÀ´NiµÄÁ¿²»¹»£¬²î²»¶àÊÇAu£ºNi=9£º1ÁË£¬ÇëÎÊÕâ¸öÎÊÌâÒªÔõô½â¾ö¡£ÎÒÓõÄʱ¼äÊÇ2h£¬250¶È¡£
ÔªËØ        ÏßÀàÐÍ        ±í¹ÛŨ¶È        k ±ÈÖµ        wt%        wt% Sigma        ±ê×¼ÑùÆ·±êÇ©        ³§¼Ò±ê×¼        ±ê×¼ÑùÆ·±ê¶¨ÈÕÆÚ
Ni        LÏßϵ        5.12        0.05119        2.10        0.96        Ni        ÊÇ       
Au        MÏßϵ        206.42        2.06422        97.90        0.96        Au        ÊÇ       
×ÜÁ¿:                                100.00
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