| 单分散纳米二氧化硅的制备及影响因素分析 |
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| 引用本文： | 赵晓琴,林敬东,蓼代伟,张鸿斌.单分散纳米二氧化硅的制备及影响因素分析[J].厦门大学学报(自然科学版),2011,50(Z1):38-40. |
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| 作者姓名： | 赵晓琴 林敬东 蓼代伟 张鸿斌 |
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| 作者单位： | 厦门大学化学化工学院化学系,醇醚酯化工清洁生产国家工程实验室,福建 厦门 361005 |
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| 基金项目： | 国家重点基础研究发展规划(973)项目 |
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| 摘 要： | 以正硅酸四乙酯(TEOS)为原料采用Stober法制备了单分散、粒径分布均匀、平均直径范围在250～800nm的纳米二氧化硅微球.通过SEM和XRD表征手段,探讨了水、TEOS和氨水用量对SiO2形貌和粒径的影响.结果表明,添加适量的水会得到粒径较大、均匀且分散性好的SiO2微球;随氨水和TEOS用量增多,SiO2粒径增加;若氨水用量太少,则得到粒径虽小但圆度差、表面不光滑的SiO2.
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| 关 键 词： | Stober法 SiO2微球 单分散 |
Preparation of Monodisperse Nano-silica Microspheres |
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| ZHAO Xiao-qin,LIN Jing-dong,LIAO Dai-wei,ZHANG Hong-bin.Preparation of Monodisperse Nano-silica Microspheres[J].Journal of Xiamen University(Natural Science),2011,50(Z1):38-40. |
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| Authors: | ZHAO Xiao-qin LIN Jing-dong LIAO Dai-wei ZHANG Hong-bin |
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| Institution: | ZHAO Xiao-qin,LIN Jing-dong,LIAO Dai-wei,ZHANG Hong-bin(National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China) |
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| Abstract: | Monodisperse nano-silica microspheres were prepared by conventional Stober method.Silica particles with sizes between 100 to 800 nm were obtained by alkaline hydrolysis of tetraethyl orthosilicate(TEOS) in ethanol solution.The morphology and particle size of nano-silica were investigated using SEM and XRD.The results showed that monodisperse silica particles could be obtained using proper amount of water.The results also showed that the silica particle sizes decreased with increasing amount of ammonia and T... |
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| Keywords: | Stober SiO2 microspheres monodisperse |
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