Highly structured, biomorphous beta-SiC with high specific surface area from Equisetaceae
- Mesoporous, highly structured silicon carbide (beta-SiC) was synthesised from renewable plant materials (two Equisetaceae species) in a one-step carbothermal process at remarkably low temperatures down to 1200 degrees C. The SiC precursor is a silicon-carbon mixture with finely dispersed carbon prepared by pyrolysis of the organic plant matrix. Yields are 3 to 100% (omega(Si/Si) related to the silicon deposited in the plant material), depending on reaction temperature and time. IR spectroscopy, X-ray diffraction, and nitrogen sorption prove the formation of high-purity beta-SiC with minor inorganic impurities after purification and a high specific surface area of up to 660 m(2) g(-1). Scanning electron microscopy shows that the plant morphology is maintained in the final SiC. Sedimentation analysis finds a mean particle size (diameters d(50)) of 20 mu m.
Author details: | Mike Neumann, Robert Noeske, Andreas TaubertORCiDGND, Brigitte TierschORCiD, Peter StrauchGND |
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DOI: | https://doi.org/10.1039/c2jm30253e |
ISSN: | 0959-9428 |
Title of parent work (English): | Journal of materials chemistry |
Publisher: | Royal Society of Chemistry |
Place of publishing: | Cambridge |
Publication type: | Article |
Language: | English |
Year of first publication: | 2012 |
Publication year: | 2012 |
Release date: | 2017/03/26 |
Volume: | 22 |
Issue: | 18 |
Number of pages: | 6 |
First page: | 9046 |
Last Page: | 9051 |
Funding institution: | University of Potsdam |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
Peer review: | Referiert |