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光能使者007

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[交流] CTAB和油酸钠合成高长径比金纳米棒

最近在用13年发表在nano letters 上的Using Binary Surfactant Mixtures To Simultaneously Improve the Dimensional Tunability and Monodispersity in the Seeded Growth of Gold Nanorods这篇文献做高长径比的金纳米棒,就是用CTAB和油酸钠做双表面活性剂,具体方法如下:种子合成方法和传统方法一致,To prepare the growth solution, 7.0 g (0.037 M in the final growth solution) or 9.0 g (0.047 M
in the final growth solution) of CTAB and a certain quantity of NaOL were dissolved in 250 mL
of warm water (~50 °C) in a 1L Erlenmeyer flask (Tables S2-S5). The solution was allowed to
cool down to 30 °C and 4 mM AgNO3 solution, as detailed in Tables S2-S5, was added. The
mixture was kept undisturbed at 30 °C for 15 min after which 250 mL of 1 mM HAuCl4 solution
3 was added. The solution became colorless after 90 min of stirring (700 rpm) and a certain
volume of HCl (37 wt. % in water, 12.1 M) was then introduced to adjust the pH (Tables S2-S5).
After another 15 min of slow stirring at 400 rpm, 1.25 mL of 0.064 M ascorbic acid (AA) was
added and the solution was vigorously stirred for 30 s. Finally, a small amount of seed solution
was injected into the growth solution (Tables S2-S5). The resultant mixture was stirred for 30 s
and left undisturbed at 30°C for 12 h for NR growth. The final products were isolated by
centrifugation at 7,000 rpm for 30 min followed by removal of the supernatant. No size and/or
shape-selective fractionation was performed.
合成出来的棒是红棕色,紫外图在下面,看紫外图小峰应该是没什么球杂质的,SEM图显示还是有挺多的球杂质,不知道有哪位大佬做过这个方法,望不吝赐教,多谢

CTAB和油酸钠合成高长径比金纳米棒
金纳米棒紫外图。png


CTAB和油酸钠合成高长径比金纳米棒-1
1.jpg


CTAB和油酸钠合成高长径比金纳米棒-2
2.jpg
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油酸钠的牌号?ctab的牌号?

发自小木虫IOS客户端
17楼2018-03-03 17:09:55
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引用回帖:
18楼: Originally posted by 光能使者007 at 2018-03-03 19:53:44
CTAB:sigma H6269-250g
油酸钠:麦克林 S817542-100g...

油酸钠用东京化成的。
19楼2018-03-04 10:11:26
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引用回帖:
27楼: Originally posted by wmanni912 at 2018-08-16 18:54:17
请问我的油酸钠和CTAB都用的阿拉丁的,是不是不行?...

You can have a try.
28楼2018-08-17 18:39:10
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