以水玻璃(硅酸钠溶液)作为起始硅源,通过阳离子交换树脂得到硅酸溶液,进而采用反相悬浮聚合法制备了多孔结构的二氧化硅微球,并考察了乳液放置时间以及碱热处理条件对于微球的形貌、比表面积、平均孔径及孔容的影响.实验发现,此方法可制备10 ～ 100 μm球形圆整的二氧化硅微球,比表面积SBET可控变化区间为124.3～597.3 m2/g,平均孔径2.487～13.97 nm,孔容0.3354 ～0.8314 cm3/g.同时,利用基本粒子生长和堆砌的机理解释了不同孔结构形成的原因.为制备粒径和孔径可控的微米级二氧化硅球提供了一种成本低且简单有效的方法.
参考文献
| [1] | Moliner-Martínez, Y.;Ribera, A.;Coronado, E.;Campíns-Falcó, P. .Preconcentration of emerging contaminants in environmental water samples by using silica supported Fe_3O_4 magnetic nanoparticles for improving mass detection in capillary liquid chromatography[J].Journal of chromatography, A: Including electrophoresis and other separation methods,2011(16):2276-2283. |
| [2] | Kim, MH;Na, HK;Kim, YK;Ryoo, SR;Cho, HS;Lee, KE;Jeon, H;Ryoo, R;Min, DH .Facile Synthesis of Monodispersed Mesoporous Silica Nanoparticles with Ultralarge Pores and Their Application in Gene Delivery[J].ACS nano,2011(5):3568-3576. |
| [3] | Piao Y Z;Bums A;Kim J et al.Designed fabrication of silica-based nanostructured particle systems for nanomedicine applications[J].Advanced Functional Materials,2008,18:22-23. |
| [4] | Stober W;Fink A;Bohn E .Controlled growth of monodisperse silica spheres in the microsize range[J].Journal of Colloid and Interface Science,1968,26:62-69. |
| [5] | Kirkland J J .Completely porous microspheres[P].US Patent,No.3782075,1974. |
| [6] | Alonso B;Douy A;Veron E et al.Morphological and textural control of spray-dried roesoporous silica-based spheres[J].Journal of Materials Chemistry,2004,14:2006-2016. |
| [7] | Boissiere C;LarbotA;Prouzet E .Synthesis of meaoporous MSU-X materials using inexpensive silica sources[J].Chemistry of Materials,2000,12:1937-1940. |
| [8] | Masahiro Fujiwara;Kumi Shiokawa;Yuko Tanaka;Yoshiko Nakahara .Preparation and Formation Mechanism of Silica Microcapsules(Hollow Sphere)by Water/Oil/Water Interfacial Reaction[J].Chemistry of Materials,2004(25):5420-5426. |
| [9] | 庞雪蕾,唐芳琼.利用廉价硅酸盐为硅源合成介孔SiO2球[J].化学通报（印刷版）,2005(02):140-144,149. |
| [10] | Lippens B C;De Boer J H .Studies on pore systems in catalysts:V.The method[J].Journal of Catalysis,1965,4(03):319-323. |
| [11] | 符远翔,孙艳辉,葛杏心.单分散纳米二氧化硅的制备与表征[J].硅酸盐通报,2008(01):154-159. |
| [12] | Her R K.The chemistry of silica:solubility,polymerization,colloid and surface properties,and biochemistry[M].,1979 |
| [13] | 赵睿,李新会,刘国诠.碱溶法制备高孔隙度多孔微球[J].色谱,2005(06):616-618. |
| [14] | Fournier R O;Rowe J J .Solubility of amorphous silica in water at high temperature and high pressure[J].American Mineralogist,1977,62:9-10. |
| [15] | 韩静香,佘利娟,翟立新,刘宝春.化学沉淀法制备纳米二氧化硅[J].硅酸盐通报,2010(03):681-685. |
| [16] | 姜小阳,李霞.纳米二氧化硅微球的应用及制备进展[J].硅酸盐通报,2011(03):577-582. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%