NANOPOROUS CERAMIC HYBRID MATERIALS SYNTHESIZED BY ORGANICALLY MODIFIED CERAMIC PRECURSOR WITH TERMINAL AMINE GROUP
Nina E. Velikova, Yuliya E. Vueva, Mohammed E. Abdallah, Yordanka Y. Ivanova, Yanko B. Dimitriev, Isabel M. Salvado, Maria H. Fernandes
Pagini: 388-399
Publicat: 1 Jan 2013
Vizualizări: 226
Descărcări: 22
Rezumat: Nanoporous ceramic materials was functionalized by co-condensation of tetraethyl orthosilicate (TEOS) and different 3-aminopropyltriethoxysilane (APTES) amounts in the presence of amphiphilic triblock copolymer poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (EO 20PO 70EO 20), who was previously dissolved in acid solution with different acid concentrations. Pluronic P123 was used as structure-directing agent and xylene as a swelling agent. Inorganic salt was introduced in order to improve structure ordering and to tailor framework porosity. The synthesized materials were characterized by scanning electron microscopy (SEM), X-ray diffraction, 29 13 nuclear magnetic resonance ( Si MAS NMR and C CP MAS NMR), Fourier –transform infrared spectroscopy (FT-IR) and elemental analysis. The results from NMR and FT-IR show that the organic functional group is successfuly incorporated in the silica framework and P123 was successfully extracted. The results from all analyzes prove that the acid concentration has significant influence on the materials morphology and properties.
Cuvinte cheie: sol-gel, mesoporous materials, hybrid materials, structure-directing agent
Citează acest articol: Nina E. Velikova, Yuliya E. Vueva, Mohammed E. Abdallah, Yordanka Y. Ivanova, Yanko B. Dimitriev, Isabel M. Salvado, Maria H. Fernandes. NANOPOROUS CERAMIC HYBRID MATERIALS SYNTHESIZED BY ORGANICALLY MODIFIED CERAMIC PRECURSOR WITH TERMINAL AMINE GROUP. Journal of International Scientific Publications: Materials, Methods & Technologies 7, 388-399 (2013). https://www.scientific-publications.net/en/article/1003069/
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