二氧化硅的表面修飾
用APTES對二氧化硅納米球進(jìn)行改性，其過程需要加入堿嗎？還有溫度對齊影響大嗎？
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這是我在一篇二氧化硅改性文獻(xiàn)里看到的步驟，然后查閱其他文獻(xiàn)ph調(diào)成3可能是為了促進(jìn)硅烷偶聯(lián)劑與二氧化硅的吸附，減少硅烷偶聯(lián)劑的聚合。
我做的是二氧化硅改性后接枝藥物
那偶聯(lián)劑的量您用多少呢？
我們實驗室這邊用的是磁力攪拌儀，不顯示功率，攪拌功率90w，是屬于劇烈的攪拌嗎？
也沒有滴加裝置，請問滴加速率對實驗的影響大嗎？
攪拌功率90w，這只是額定功率，具體要看你調(diào)節(jié)的轉(zhuǎn)速；
買一個微量注射器就好了，滴加慢一點。
滴加速率影響比較大
請問有KH550 改性的文獻(xiàn)嗎？也想改性，謝謝~
Typically, 12 mL
MNCs water dispersion, 80 mL ethanol, and 4 mL ammonium hydroxide were
mixed together in a three-neck ask. For each 20 min, 0.4 mL
TEOS was slowly injected in. The thickness of silica shell can be
determined by the times of the injection of TEOS. For Fe3-
O4@SiO2 described in the main text, TEOS was injected three
times. The coating process was conducted under vigorous
mechanical stirring and 50℃ water bath
，
With vigorously stirring, 400μL of APTES and
600 L of ammonia were added to 50 mL of Fe3O4@SiO2
MNPs solution suspended in 95% ethanol/water solution.
To enhance covalent bonding of the amine groups to
the silica nanoparticle surface, the mixture was reacted
for 4 h. The black precipitates were washed 3 times
with ethanol and the obtained APTES-functionalized
Fe3O4@SiO2 MNPs were re-dispersed in ethanol.