Thermal decomposition of manganese carbonyl in supercritical CO2 as a simple and effective approach to obtain manganese oxide aerogels
| Autor: | Alexander A. Korlyukov, Elena P. Kharitonova, I. V. Elmanovich, V. V. Zefirov, Alexander V. Pastukhov, Marat O. Gallyamov |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Oxide 02 engineering and technology 010402 general chemistry 01 natural sciences Biomaterials chemistry.chemical_compound Specific surface area Materials Chemistry Monolith geography geography.geographical_feature_category Supercritical drying Thermal decomposition Dimanganese decacarbonyl Aerogel General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Supercritical fluid 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry Chemical engineering Ceramics and Composites 0210 nano-technology |
| Zdroj: | Journal of Sol-Gel Science and Technology. 92:116-123 |
| ISSN: | 1573-4846 0928-0707 |
| DOI: | 10.1007/s10971-019-05092-2 |
| Popis: | A novel approach to synthesize metal oxide aerogels is presented. The monolith aerogel structure is formed using dimanganese decacarbonyl as a precursor at elevated temperatures directly in supercritical CO2. Unlike previously described and developed sol–gel approaches, the proposed synthetic route requires only several hours without any necessity either to add any additional reaction-promoting liquid agents or to perform prolonged gel aging, solvent exchange, or supercritical drying steps. The morphology of the obtained aerogels was studied by means of scanning and transmission electron microscopy. Using low-temperature nitrogen adsorption technique, it was demonstrated, that achievable surface area of the aerogels could be tailored by varying the precursor concentration. Eventually, aerogels with a specific surface area of up to 170 m2/g were obtained. |
| Databáze: | OpenAIRE |
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