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viviensweety: ½ð±Ò+10, ¡ï¡ï¡ïºÜÓаïÖú 2012-05-29 12:38:27
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viviensweety: ½ð±Ò+10, ¡ï¡ï¡ïºÜÓаïÖú 2012-05-29 12:38:15
We synthesized CuNWs by reducing Cu(NO 3 ) 2 with hydrazine
in an aqueous solution containing NaOH and ethylenediamine
(EDA), following the approach developed by Zeng and
coworkers. [ 13 ] Compared to this previous work, we have scaled
up the reaction by 200 times (from 0.006 to 1.2 g of CuNWs)
to demonstrate its potential for large-scale production. For the
scale up reaction ( Figure 1 ) NaOH (2000 mL, 15M), Cu(NO 3 ) 2
(100 mL, 0.2M), EDA (30 mL), and hydrazine (2.5 mL, 35 wt%)
were added to a reaction fl ask and heated at 80 ¡ã C for 60 minutes.
The solution went from a royal blue (Figure 1 a), indicative
of Cu 2 + ions, to a reddish brown color indicative of CuNW
formation (Figure 1 b) after 20 minutes. After the reaction, the
CuNWs were washed with a 3 wt% aqueous solution of hydrazine,
and stored in the same hydrazine solution at room temperature
under an argon atmosphere to minimize oxidation. [ 13 ]

²Î¿¼ÎÄÏ×The Growth Mechanism of Copper Nanowires and Their
Properties in Flexible, Transparent Conducting Films £¨Adv. Mater. 2010, 22, 3558¨C3563£©
3Â¥2012-05-28 11:15:57
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viviensweety

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