Hexagonal mesoporous silica nanoparticles with large pores and a hierarchical porosity tested for HPLC
| Autor: | Martines, M.U.A., Yeong, E., Persin, M., Larbot, A., Voorhout, W.F., KÜbel, C.K.U., Kooyman, P.J., Prouzet, E., Ramos, L. |
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| Přispěvatelé: | Publica, Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM) |
| Rok vydání: | 2005 |
| Předmět: |
Morphology (linguistics)
Materials science General Chemical Engineering Analytical chemistry Nanoparticle 02 engineering and technology General Chemistry Poloxamer Mesoporous silica 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Adsorption Chemical engineering Copolymer [CHIM]Chemical Sciences 0210 nano-technology Porosity Mesoporous material |
| Zdroj: | Comptes Rendus. Chimie Comptes Rendus. Chimie, Académie des sciences (Paris), 2005, 8, pp.627-634. ⟨10.1016/j.crci.2004.10.022⟩ |
| ISSN: | 1631-0748 1878-1543 |
| DOI: | 10.1016/j.crci.2004.10.022 |
| Popis: | We report the preparation of a novel type of mesoporous silica of the MSU-type family. This material was prepared with Pluronic P123 copolymer in mild acidity according to a two-step process. Its structure was explored by X-ray diffraction, N2 isotherms, SEM and TEM. The TEM study was completed by a 3D tomography analysis that allowed us to obtain information on the morphology of the pore-and-void system. The powder is homogeneous and made of nanoparticles (200 nm in size) built by the folding of ribbons with hexagonally-packed pores (pore diameter of 8.6 nm). This folding creates microvoids in the particles that give rise to an additional porosity. The properties of adsorption/separation of this new type of silica were tested for HPLC. Although the powder was not optimized for this application, the first results on ungrafted silica appear equivalent to those obtained with a commercial HPLC silica powder. To cite this article: M.U. Martines et al., C. R. Chimie 8 (2005). |
| Databáze: | OpenAIRE |
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