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板蓝根_秦

新虫 (正式写手)

[求助] 纳米二氧化硅溶胶如何分离 已有1人参与

本人想用硅烷偶联剂改性纳米二氧化硅(粒径40以下,阿拉丁购买),乙醇/水混合溶剂,分离后得到溶胶,抽滤实验室滤纸孔径最小200nm,离心1w转/min十分钟也没分开的迹象。请问怎么分离啊?直接蒸发肯定可以,但是那样未反应的硅烷偶联剂就分不开,后续不好表征。请教大家怎么分离呢?有没有做过这方面的同学指教一下。

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zhywell22

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【答案】应助回帖

尺寸小,分离难度是比较大的。1W转10分钟不行  那就30分钟试试
2楼2019-09-20 14:10:54
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