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sherry93126

新虫 (正式写手)

[求助] 石墨烯量子点的分离问题 已有3人参与

0.21 g (1 mmol) citric acid and 0.23 g (3 mmol) thiourea were
dissolved into 5 ml water, and stirred to form a clear solution.
Then the solution was transferred into a 20 ml Teon lined
stainless autoclave. The sealed autoclave was heated to 160 C
in an electric oven and kept for additional 4 hours. The final
product was collected by adding ethanol into the solution and
centrifuged at 5000 rpm for 5 min. The solid can be easily
redispersed into water.

文献里面给出了这样的方法,可是最后分离的时候文献说加入乙醇,离心出固体,可是我都用1200转速离了20分钟了,还是离不出来,请问有人做过这种方法吗,要如何分离呢
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lqttxs

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3楼2016-04-23 20:05:32
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小牧小木

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2楼2016-04-23 18:36:58
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01102

银虫 (正式写手)

【答案】应助回帖

感谢参与,应助指数 +1
换环己烷作溶剂试试,按照你给的方案,所合的量子点应该溶于水也溶于乙醇,一般纯化我们都不用离心,最好是透析或者过柱,仅个人愚见,供参考
4楼2016-04-23 20:14:28
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sherry93126

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引用回帖:
2楼: Originally posted by 小牧小木 at 2016-04-23 18:36:58
只有1200?

sorry打错了,12000
It's not about money, it's about the people you have, how you're lead and how much you get it.
5楼2016-04-25 08:54:58
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