Preparation of nanoporous silica using copolymer template
Preparation of nanoporous silica using copolymer template
复制标题
共聚物模板法制备纳米多孔二氧化硅
DOI：
10.1016/s0254-0584(02)00340-1
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发表时间：
2003
影响因子：
4.6
通讯作者：
M. Tanigaki
中科院分区：
文献类型：
--
作者：
J. Jiu;K. Kurumada;M. Tanigaki
具有不同纳米级孔径的二氧化硅固体由四乙氧基硅烷（TEOS）和甲基丙烯酸羟乙酯（HEMA）和乙二醇二甲基丙烯酸酯（EGDMA）的共聚物凝胶形成，其中后者作为交联剂。讨论了共聚物摩尔比[HEMA]/[EGDMA]对模板凝胶中形成的二氧化硅多孔结构的影响。采用傅里叶变换红外光谱仪(FT-IR)、热重分析(TGA)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对凝胶和多孔二氧化硅的性能和结构进行了表征。结果表明，[HEMA]/[EGDMA]摩尔比可以改变二氧化硅的孔径，这直接影响共聚物凝胶的模板结构。随着摩尔比的增加，获得了更大的孔径，这对应于交联密度的降低。 FT-IR 和 TGA 表明，由于基于氢键的凝胶/二氧化硅亲和力，二氧化硅部分键合到共聚物凝胶的网络上。
Silica solids with different nanoscaled pore diameters were formed from tertraethoxysiliane (TEOS) and copolymer gel of hydroxyl ethyl methacrylate (HEMA) and ethylene glycol dimethacrylate (EGDMA) where the latter worked as the cross-linker. The effects of molar ratio [HEMA]/[EGDMA] of copolymers on the porous structure of silica formed in the template gel were discussed. The properties and structure of gel and porous silica were characterized by Fourier transform infrared spectrometer (FT-IR), thermogravimetric analysis (TGA), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results indicated that the pore diameter of silica could be varied by the [HEMA]/[EGDMA] molar ratio which directly affects the templated structure of copolymer gel. The larger pore diameter was obtained with the increased molar ratio, which corresponds to the decrease in the cross-link density. FT-IR and TGA suggested that the silica moiety is bonded to the network of the copolymer gel due to the gel/silica affinity based on the hydrogen bonding.
影响因子：
56.9
作者：
Zhao, DY;Feng, JL;Stucky, GD
通讯作者：
Stucky, GD
影响因子：
29.4
作者：
Brinker, CJ;Lu, YF;Fan, HY
通讯作者：
Fan, HY