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[求助]
介孔二氧化硅的合成 已有7人参与
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| 请问各位大侠，我用480ml水，1gCTAB，0.28g氢氧化钠，5mlTEOS是否可以形成MCM-41型的介孔二氧化硅。本人做了后拍电镜不是文献上提到的结构，真心郁闷。导师说我的CTAB浓度太低 形成液晶。真心希望可以得到某位高人的指点 |
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阳光西骑士
木虫 (正式写手)
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【答案】应助回帖
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Typically, 0.3 g CTAB and 0.1 g PVP30 were added to a solution containing 90 mL of deionized water and 60 mL of methanol. The solution was adjusted to pH 10.2 by an ammonia solution, and then 600 μL TEOS and 50 μL APTES were added. After stirring for 2.5 h at room temperature, the resultant particles were separated and washed with ethanol and water. The extraction of organic templates for the as-synthesized particles was performed by dispersing these particles into 50 mL of a mixed solution of ethanol and NH4NO3 (0.3 g) at 60 °C for 1 h. The synthesis of FITC-labeled MSNs-NH2 is similar to that of the unlabeled ones, except that FITC-APTES (50 μL) and APTES were added together during the condensation process. 不加APTES，表面就是没有修饰氨基的介孔硅，这个方法你试试，虽然产率低点，但是做出来的是球形的介孔硅，100多nm。 |
31楼2016-10-08 22:23:51
。。。。2楼2016-09-18 11:14:09
sqzhao
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3楼2016-09-18 15:25:02
4楼2016-09-18 18:03:45
