A Facile One‐Pot Synthesis of Hierarchically Organized Carbon/TiO 2 Monoliths with Ordered Mesopores
| Autor: | Michael S. Elsaesser, Christian Prehal, Lawrence Whitmore, Simon Rumswinkel, Jürgen Schoiber, Oskar Paris, Christian Koczwara, Florian Putz, Nicola Hüsing |
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| Rok vydání: | 2021 |
| Předmět: |
Macroporous carbon
Materials science 010405 organic chemistry Spinodal decomposition One-pot synthesis chemistry.chemical_element General Chemistry Resorcinol 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Chemical engineering Mesoporous material Carbon Titanium |
| Zdroj: | ChemPlusChem. 86:275-283 |
| ISSN: | 2192-6506 |
| Popis: | Sol-gel processing combined with soft templating and gelation-induced phase separation is very sensitive to the precursor sol composition. In this work we present a straightforward synthesis towards hierarchically structured, macroporous carbon/titania monoliths with ordered mesopores derived from resorcinol/formaldehyde monoliths and a glycolated titanium precursor. We demonstrate the influence of various reaction solvents, where diol-based media and the proportion of the catalyst seem to be essential in controlling spinodal decomposition, obtaining similar monolithic structures under different synthesis conditions. Based on these observations, we further homogeneously incorporated TiO2 into the carbon structure by an in situ synthesis approach, obtaining structural features similar to pure carbon materials with surface areas of about 400 m2 g-1 , periodically arranged mesopores with a mean distance of 10-11 nm and cellular macroporosity. |
| Databáze: | OpenAIRE |
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