Journal article
Carbide-derived-carbons with hierarchical porosity from a preceramic polymer
Carbon (New York), v 48(1)
2010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Synthesis of carbon by extraction of metals from carbides has been successfully used to produce a variety of micro-porous carbide-derived carbons (CDCs) with narrow pore size distributions and tunable sorption properties. This approach is of limited use when larger mesopores are targeted, however, because the relevant synthesis conditions yield broad pore size distributions. Here we demonstrate the porosity control in the 3–10
nm range by employing preceramic polymer-derived silicon carbonitride (SiCN) precursors. Polymer pyrolysis in the temperature range 600–1400
°C prior to chlorine etching yields disordered or graphitic CDC materials with surface area in the range 800–2400
m
2
g
−1. In the hierarchical pore structure formed by etching SiCN ceramics, the mesopores originate from etching silicon nitride (Si
3N
4) nano-sized crystals or amorphous Si–N domains, while the micropores come from SiC domains. The etching of polymer-derived ceramics allows synthesis of porous materials with a very high specific surface area and a large volume of mesopores with well controlled size, which are suitable for applications as sorbents for proteins or large drug molecules, and supports for metal catalyst nanoparticles.
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Details
- Title
- Carbide-derived-carbons with hierarchical porosity from a preceramic polymer
- Creators
- Sun-Hwa Yeon - Department of Materials Science and Engineering, A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USAPatricia Reddington - Department of Materials Science and Engineering, A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USAYury Gogotsi - Department of Materials Science and Engineering, A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USAJohn E Fischer - Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USACekdar Vakifahmetoglu - Dipartimento di Ingegneria Meccanica – Settore Materiali, Università di Padova, Via Marzolo, 9. 35131 Padova, ItalyPaolo Colombo - Dipartimento di Ingegneria Meccanica – Settore Materiali, Università di Padova, Via Marzolo, 9. 35131 Padova, Italy
- Publication Details
- Carbon (New York), v 48(1)
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000272018800025
- Scopus ID
- 2-s2.0-70350025547
- Other Identifier
- 991014878456204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary