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lo@丹丹@ve金蟲 (小有名氣)
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[求助]
求助200nm左右的二氧化硅球的做法 已有5人參與
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| 現(xiàn)想以二氧化硅作為模板進(jìn)行材料合成,相合成200nm左右的二氧化硅顆粒,但是現(xiàn)在的問題是合成出的二氧化硅均在400-500nm之間,求各路大神指導(dǎo)。 |

木蟲 (著名寫手)
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???????4?????????????????????????????????TEOS,????????????????????????????????????λ???????????????????????10h???????????????????羵?????????????????á????????????????4??ɡ?The preparation of different sized silica spheres involves the ammonia-catalyzed hydrolysis and condensation of TEOS in an aqueous ethanol solution via the classical st?ober method.21,22 Taking the synthesis of ∼190 nm silica spheres as an example, 15 mL of absolute ethanol, 5 mL of DI water, and 0.7 mL of 28% NH3 3H2O were mixed and stirred. A total of 0.6 mL of TEOS was added into the mixture quickly. After a reaction time of about 10 h, the silica spheres were isolated by centrifugation. Then the white precipitate was washed with ethanol three times. |
金蟲 (小有名氣)

金蟲 (小有名氣)

金蟲 (正式寫手)

金蟲 (正式寫手)

專家顧問 (著名寫手)
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專家經(jīng)驗(yàn): +108 |
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????????????Langmuir 2011, 27, 7185?C7191????????????????????????? ??鲿?????????The preparation of different sized silica spheres involves the ammonia-catalyzed hydrolysis and condensation of TEOS in an aqueous ethanol solution via the classical st?ober method.21,22 Taking the synthesis of ∼190 nm silica spheres as an example, 15 mL of absolute ethanol, 5 mL of DI water, and 0.7 mL of 28% NH3 3H2O were mixed and stirred. A total of 0.6 mL of TEOS was added into the mixture quickly. After a reaction time of about 10 h, the silica spheres were isolated by centrifugation. Then the white precipitate was washed with ethanol three times. |
木蟲 (著名寫手)
金蟲 (著名寫手)
商家已經(jīng)主動聲明此回帖可能含有宣傳內(nèi)容|
南京東檢生物科技有限公司有分散納米/微米二氧化硅、介孔二氧化硅 、PS等微球產(chǎn)品。 我們有現(xiàn)成的200nm的單分散二氧化硅微球,可以節(jié)約您的時(shí)間。 公司網(wǎng)站:http://njdjsw.com/ 聯(lián)系QQ號碼:1065306271 |
銅蟲 (小有名氣)
銅蟲 (小有名氣)
木蟲 (著名寫手)
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