Hierarchically structured polymer-derived ceramic fibers by electrospinning and catalyst-assisted pyrolysis |
| |
| Affiliation: | 1. Department of Industrial Engineering, University of Padova, via Marzolo 9, Padova 35131, Italy;2. School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;3. Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16801, USA;1. Department of Materials Science and Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA;2. Department of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333001, PR China;1. Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04 0 01 Ko?ice, Slovak Republic;2. Faculty of Materials, Metallurgy and Recycling, Technical University of Ko?ice, Letná 9, 040 01 Ko?ice, Slovak Republic;3. Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01 Ko?ice, Slovak Republic;4. Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 45, 040 01 Ko?ice, Slovak Republic;5. Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovak Republic;6. Centre of Excellence for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11 Bratislava, Slovak Republic;1. Dipartimento di Ingegneria Industriale, Università di Trento, Via Sommarive 9, 38123 Trento, Italy;2. Department of Mechanical Engineering, Istanbul Kemerburgaz University, 34217 Istanbul, Turkey;1. MOE Key Laboratory of Space Applied Physics & Chemistry, Shaanxi Key Laboratory of Macromolecular Science &Technology, School of Natural & Applied Sciences, Northwestern Polytechnical University, Xi''an, 710072, China;2. Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN, 37996, USA;3. Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, 450002, China;4. College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;5. Lyles School of Civil Engineering, School of Materials Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, 47906, USA;6. Materials Engineering and Nanosensor [MEAN] Laboratory, Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, USA;7. College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, China;8. Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China;9. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN, 37831, USA |
| |
| Abstract: | Hierarchically structured polymer-derived ceramic fibers were successfully produced by electrospinning a commercially available preceramic polymer to which a cobalt-based catalyst precursor was added, followed by pyrolysis in nitrogen at temperatures ranging from 1250 to 1400 °C. The nanowires formed via the vapor–liquid–solid (VLS) mechanism, involving the reaction of SiO and CO gases, generated from the decomposition of the polymer-derived-ceramic at high temperature, with the heating atmosphere assisted by the presence of nano-sized CoSi droplets. The main crystalline phase for the nanowires was Si3N4 below 1350 °C, and Si2N2O at 1400 °C, and the amount of nanowires increased with increasing heating temperature. Hierarchically structured fiber mats possessed a higher specific surface area (14.45 m2/g) than that of a sample produced without the cobalt catalyst (4.37 m2/g). |
| |
| Keywords: | Hierarchically structured fibers Electrospinning Preceramic polymers Polymer-derived-ceramics Nanowires |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
