摘要
The mesoporous silica SBA-15 in various morphologies micrometer-sized fibers, millimeter-scaled ropes and macrospheres have been conveniently prepared by controlling the chemical composition. For reducing the size of particles of the SBA-15 materials, a delayed agitation process was found to lead to nanometer-sized fibers. We propose that it generates numerous nucleation seeds at the interface of TEOS and surfactant water solution and leads to very small fibers. With a proper aging time of 20 minutes, silica nanotubes-bundles with diameter of about 100 nm were obtained. In addition to the normal mesopores, the SBA-15 silica nanotubes possess extra textural porosity.
原文 | 英語 |
---|---|
頁(從 - 到) | 387-394 |
頁數 | 8 |
期刊 | Studies in Surface Science and Catalysis |
卷 | 141 |
DOIs | |
出版狀態 | 已發佈 - 2002 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 催化
- 凝聚態物理學
- 物理與理論化學
- 表面、塗料和薄膜
- 材料化學