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梦幻1990

新虫 (初入文坛)

[求助] 关于孙守恒教授Au纳米颗粒制备的问题

本人在做孙守恒教授Au-Fe3O4纳米颗粒进行8nmAu颗粒制备时遇到问题,Au纳米颗粒无法通过离心机离出。
文献如下:1.0 g HAuCl4(H2O)3 (2.5 mmol) was added to 100 ml
tetralin, followed by 10 ml oleylamine (30 mmol) to form a red solution. The solution
was then heated at 65°C for 5 hrs and then cooled to room temperature. Ethanol was
added to the solution, and gold particles were separated by centrifugation, washed by
ethanol, and then redispersed in hexane.
其中,酒精加入四氢萘的量为体积比2:1
离心转速一万转,20min。
量等比例的减少,0.35g HAuCl4(H2O)3,35mL四氢萘,3.5ml油胺。
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jesuschrist

木虫 (小有名气)

【答案】应助回帖

问题解决了么?遇到同样的问题
2楼2017-11-20 19:34:03
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天堑123

新虫 (初入文坛)

【答案】应助回帖

颜色较深的那部分溶液就是粒子,分离出来洗两遍就可以离心出来了
3楼2018-03-06 20:04:28
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