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mzyr888

木虫 (著名写手)

引用回帖:
Originally posted by Foxeran at 2010-10-16 15:33:37:
查查文献看别人的参数不就清楚了,这个没有一定比例吧。你目的是什么呢?合成?形貌控制?促进分散?如果是完全新的实验,需要调试浓度的。如果只纳米颗粒,你先从多点开始加就行了。

谢谢,如果用PEG合成氧化锌,原料用硝酸锌,如果加1g硝酸锌,需加多少PEG,可不可以有一个大概比例,如果换其他表面活性剂,可不可以参照PEG的用量?
严谨治学,问鼎天下.
11楼2010-10-18 15:00:59
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Foxeran

木虫 (正式写手)

★
nuaajsh(金币+1):鼓励交流 2010-10-18 18:55:38
mzyr888(金币+1): 2010-10-19 14:16:53
http://g.zhubajie.com/urllink.php?id=10063466mc1qj8br7upqunwk
你可以看看这篇文献,不知你用的peg分子量是多少?peg有固体,有液体,有人直接用peg做溶剂,所以还真不好说。当然可以参照peg的用量,但基本上用别的表活剂与peg不会相同,仅仅用来做对照试验而已。
Ithink,andIam.
12楼2010-10-18 16:32:54
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Foxeran

木虫 (正式写手)

★
nuaajsh(金币+1):鼓励交流 2010-10-18 18:55:45
0.003 mol of Zn(NO3)2â6H2O and 0.06 mol of NaOH
were dissolved in 5 mL of deionized distilled water, and 2 g of
poly ethylene glycol (PEG 2000 for synthesis of ZnO nanotubes
and PEG 200 for ZnO nanocones) was dissolved in a mixed
solution of 50 mL of anhydrous ethanol and 10 mL of deionized
water with stirring. The mixture experienced a 10 min supersonic
(20 kHz) pretreatment in a pulverizer with a power of 200 to
600 W and then was hydrothermally treated at 453 K for 20
h in a Teflon-lined autoclave. After the reactions, white
crystalline products were harvested by centrifugation and
thoroughly washed with absolute alcohol and hot water 3 times.
J. Phys. Chem. B, Vol. 110, No. 51, 2006 25737
Ithink,andIam.
13楼2010-10-18 16:39:59
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mzyr888

木虫 (著名写手)

引用回帖:
Originally posted by Foxeran at 2010-10-18 16:39:59:
0.003 mol of Zn(NO3)2â6H2O and 0.06 mol of NaOH
were dissolved in 5 mL of deionized distilled water, and 2 g of
poly ethylene glycol (PEG 2000 for synthesis of ZnO nanotubes
and PEG 20 ...

谢谢
严谨治学,问鼎天下.
14楼2010-10-19 14:17:09
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lishouligood

银虫 (初入文坛)

引用回帖:
Originally posted by mzyr888 at 2010-10-18 14:57:31:

无论合成什么,一般情况下,表面活性剂与原料或产物质量的比例,不知道怎么控制,谢谢~~~~~~~

以前做的,我一般加等摩尔量的,看看形貌再逐次减少,减少时0.01mol的减,这也与CMC有关
要成功,先要疯,勇敢往前冲
15楼2010-10-20 11:04:55
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mzyr888

木虫 (著名写手)

引用回帖:
Originally posted by lishouligood at 2010-10-20 11:04:55:

以前做的,我一般加等摩尔量的,看看形貌再逐次减少,减少时0.01mol的减,这也与CMC有关

谢谢
严谨治学,问鼎天下.
16楼2010-10-20 14:16:24
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