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fandengxin
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[求助]
Fe3O4包覆SiO2,小問題請教,謝謝!祝大家平安夜快樂~
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2 Preparation of Fe3O4@SiO2 nanoparticles The Fe3O4 nanoparticles (300 mg) were redispersed in the mixture of anhydrous ethanol (160 mL) and ultrapure water (40 mL) by sonication for approximately 15 min. Subsequently, under continuous mechanical stirring (700 rpm), ammonium hydroxide (5 mL) and TEOS (0.7 mL) were consecutively added into the reaction mixture. The reaction proceeded at 40 ℃ for 12 h under continuous mechanical stirring. The resulting product was obtained by magnetic separation and then washed with ultrapure water thoroughly. 用這種方法合成的,每次可以得到Fe3O4@SiO2 多少個(gè)毫克的?我嘗試了一下 Fe3O4 (300 mg)得到Fe3O4@SiO2 330mg,感覺包上去的SiO2是不是有點(diǎn)少?菜鳥一枚,謝謝指點(diǎn) |
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至尊木蟲 (職業(yè)作家)

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