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cy211木虫 (职业作家)
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[求助]
求助好心人帮忙解答合成改性磁性纳米材料（MPS） 已有2人参与
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小弟按照文献合成改性磁性纳米材料，最后发现只剩下很少的产物，并且合成的产物没有磁性了？ 求助有合成经验的朋友帮忙分析下问题出在哪里啊！着急啊！做不出来！ 参考文献： 合成第一步： 4 mL MPS and 8 mmol dibutylamine（二丁胺） were added into 50 mL toluene dispersion of magnetic nanoparticles（0.5g） and were then stirred（磁力搅拌24小时）for 24h at room temperature. The MPS-modified Fe3O4 nanoparticles were precipitated from the dispersion by adding 250mL petroleum ether and were collected by magnetic separation. Then the magnetic nanoparticles were dispersed in toluene and precipitated by petroleum ether for three times to remove unreacted MPS and replaced oleic acid. Finally, the magnetic nanoparticles were dried under vacuum at 50oC for at least 12 h. |
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2楼2017-05-26 08:38:49
cy211
木虫 (职业作家)
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