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yanhualover: ½ð±Ò+2, ·ÖÎöµÄºÜÖØÖпϣ¬»¶Ó­Ö¸µ¼¡£ 2013-09-19 17:38:42
A simple way is to wash with water and use high speed centrifuge (~40000g) to precipitate the silica NPs. Generally need 3-5 repeated washing and centrifugation, you can get high water dispersible NPs.
6Â¥2013-09-18 09:54:24
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Your phenomena is quite common in W/O emulsion synthesis of silcia NPs. This is because surfactant strongly absorbed on to the surface of the silica NPs and thus leads to the aggregation.
4Â¥2013-09-18 09:10:19
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2Â¥: Originally posted by nano-jenny at 2013-09-17 15:33:39
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4Â¥: Originally posted by nusucou-1 at 2013-09-18 09:10:19
Your phenomena is quite common in W/O emulsion synthesis of silcia NPs. This is because surfactant strongly absorbed on to the surface of the silica NPs and thus leads to the aggregation.

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