Journal
JOURNAL OF POROUS MATERIALS
Volume 19, Issue 5, Pages 529-536Publisher
SPRINGER
DOI: 10.1007/s10934-011-9501-x
Keywords
Mesopores; Carbon; Silica colloid; Filamentary macroporous structure
Funding
- Leverhulme Trust [F/07476/V]
- EPSRC under SUPERGEN Initiative via. the UK Biological Fuel Cells Consortium [EP/H019480/1]
- Engineering and Physical Sciences Research Council [EP/H019480/1] Funding Source: researchfish
- EPSRC [EP/H019480/1] Funding Source: UKRI
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New methods for fabrication of 3D macroporous carbon scaffolds and synthesis of mesopores on carbon surfaces are proposed. Ordered macroporous filamentary carbon structures were made by rapid prototyping using solvent-based extrusion freeforming which allows the scaffold to be designed on computer and downloaded directly to a building platform. The surface of extruded filaments was decorated with 20-25 nm open mesopores by coating with nano-silica as a hard template followed by pyrolysis and dissolution of the silica. This left an open mesoporous surface to serve as a host for catalysts or enzymes while retaining integrity in the core for electrical and mechanical performance. The combination of these two methods could be used to make different hierarchical, multi-functional carbon structures which could be applied in fuel cells as the catalyst carrier and biofuel cell electrode.
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