期刊
CERAMICS-SWITZERLAND
卷 3, 期 1, 页码 92-100出版社
MDPI
DOI: 10.3390/ceramics3010010
关键词
ceramic pieces; Cr2O3; hollow morphology; carbon fibers; multiscale architectures
资金
- French National Centre for Scientific Research (CNRS)
- French German Research Institute of Saint-Louis (ISL, Saint-Louis, France)
- University of Strasbourg (UNISTRA, Strasbourg, France)
A simple, efficient synthesis approach for designing large ceramic pieces, herein termed chromium (III) oxide (Cr2O3) material, is provided. The process can be called the replica technique, or replication. The elaboration of a material with a unique morphology is a result of a ceramic salt coating that has been previously dissolved in ethylene glycol as the solvent; this process is performed on a carbon material surface that is selected as a template. Here, the carbon template was carbon fiber. After a heat treatment to convert the ceramic precursor to the corresponding ceramic oxide followed by the removal of the template, hollow ceramic oxide wires were obtained. The resulting material was characterized by X-ray diffraction, Raman and Fourier transform infrared spectroscopies, and scanning electron microscopy. The material exhibited a multiscale architecture, assembling nanosized nodules to form micron-sized tubes that assemble themselves into a centimetric structure. Objects with such tailored architectures can be used in a large variety of applications in fields as diverse as pyrotechnics, adsorption, and catalysis.
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