Physicochemical effects of amino- or sulfur-functional groups onto SBA-15 sol-gel synthesized mesoporous ceramic material
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- 作者：Zulema Vargas-Osorio ; Osmar Alejandro Chanes-Cuevas ; Adriana Pé ; rez-Soria ; Manuel Garcí ; a-Hipolito ; Octavio Alvarez-Fregoso and Marco Antonio Alvarez-Perez
- 刊名：physica status solidi (c)
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：14
- 期：1-2
- 全文大小：1192K
- ISSN：1610-1642a
文摘
SBA-15 mesoporous ceramics were synthesized by a sol-gel method with some modifications and functionalized with ethylenediamine or tetrasulfide groups and using a sequential washing approach of organic solvent mixtures. The effects of the functional groups onto the physicochemical properties were characterized using XRD, TG/DTA, FTIR, N<sub>2sub> adsorption–desorption, TEM, SEM and NMR. These analyses showed that the SBA-15 ceramic synthesized at low temperature shows a flat two-dimensional hexagonal symmetry with pore diameters of 7.1 to 7.8 nm. In the meantime, the functionalized ethylenediamine SBA-15 presented a narrow pore-size distribution with diameter around 3.5 to 5.7 nm.