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Nanosponge Tunability in Size and Crosslinking Density
Published on: August 4, 2017
Nanoporous carbide-derived carbon with tunable pore size
Yury Gogotsi1, Alexei Nikitin, Haihui Ye
1Department of Materials Science and Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, USA. gogotsi@drexel.edu
Nature Materials
|August 9, 2003
Summary
Carbide-derived carbons (CDCs) offer tunable nanopores with sub-ångström accuracy, rivaling zeolites. This breakthrough in porous material synthesis opens doors for advanced applications in filtration and energy storage.
Area of Science:
- Materials Science
- Nanotechnology
- Chemistry
Background:
- Porous solids are crucial for gas and liquid interactions.
- Controlling nanopores (≤ 2 nm) is challenging, typically limited to carbons or zeolites.
- Current research focuses on pore size, shape, and uniformity control.
Purpose of the Study:
- To demonstrate tunable porosity in carbide-derived carbons (CDCs) with sub-ångström accuracy.
- To compare CDC pore-size distribution with other porous materials.
- To explore the synthesis and applications of CDCs.
Main Methods:
- Synthesizing CDCs from Ti3SiC2 via chlorination at temperatures ranging from 200-1,200 °C.
- Characterizing CDC porosity and pore-size distribution.
- Producing CDCs in various forms (powder, coating, membrane, parts).
Main Results:
- CDC porosity was precisely tuned by controlling chlorination temperature.
- CDCs exhibited narrower pore-size distributions than single-wall carbon nanotubes and activated carbons.
- CDC pore-size distribution was comparable to that of zeolites.
- CDCs can be produced with or without mesopores.
Conclusions:
- CDC synthesis offers unprecedented control over nanopore size with sub-ångström accuracy.
- CDCs present a versatile alternative to traditional porous materials like zeolites and activated carbons.
- Tunable CDCs are suitable for diverse applications including molecular sieves, gas storage, catalysis, and energy devices.
