| 中空SiO_2纳米微球的制备与表征 |
| |
| 引用本文： | 罗花娟,赵彦保. 中空SiO_2纳米微球的制备与表征[J]. 化学研究, 2010, 21(6): 49-52 |
| |
| 作者姓名： | 罗花娟 赵彦保 |
| |
| 作者单位： | 河南大学特种功能材料教育部重点实验室,河南开封475004 |
| |
| 摘 要： | 在乙醇/氨水介质中,将SiO2包覆在聚乙烯吡咯烷酮(PVP)功能化的聚苯乙烯(PS)微粒表面,利用一步法得到了中空纳米二氧化硅微球;研究了影响中空纳米二氧化硅微球形成的主要因素,并探讨了中空纳米SiO2微球的可能形成机理.结果表明,在一定的反应时间下,当氨水用量为0.6 mL、温度为70℃时,可以获得空心结构的SiO2纳米微球;通过控制四乙基原硅酸盐(TEOS)的量可以调节微球的包覆层厚度.
|
| 关 键 词： | SiO2 纳米微球 空心纳米微球 制备 表征 |
Preparation and Characterization of Silica Hollow Nanospheres |
| |
| LUO Hua-juan,ZHAO Yan-bao. Preparation and Characterization of Silica Hollow Nanospheres[J]. Chemical Research, 2010, 21(6): 49-52 |
| |
| Authors: | LUO Hua-juan ZHAO Yan-bao |
| |
| Affiliation: | (Key Laboratory of Ministry of Education for Special Functional Materials,Henan University, Kaifeng 475004,Henan,China) |
| |
| Abstract: | Hollow SiO2 nanospheres were prepared in ethanol/NH3·H2O medium by precipita-ting SiO2 on polystyrene（PS） particulates functionalized by polyvinylpyrrolidone（PVP）.The main factors influencing the formation of hollow SiO2 nanospheres were investigated.Moreover,possible mechanism for the formation of hollow SiO2 nanospheres was explored.It was found that at a certain reaction time,hollow SiO2 nanospheres were easily obtained at a temperature of 70 ℃ and NH3·H2O dosage of 0.6 mL.Besides,it was feasible to manipulate the thickness of the encapsulating shell by adjusting the content of tetraethyl orthosilicate（TEOS）. |
| |
| Keywords: | SiO2 nanosphere hollow nanosphere preparation characterization |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
