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Replication and Coating of Silica Templates by Hydrothermal Carbonization
Author(s) -
Titirici M.M.,
Thomas A.,
Antonietti M.
Publication year - 2007
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200600501
Subject(s) - materials science , hydrothermal carbonization , chemical engineering , carbonization , hydrothermal circulation , raman spectroscopy , carbon fibers , fourier transform infrared spectroscopy , template , x ray photoelectron spectroscopy , porosimetry , coating , mesoporous material , mesoporous silica , nanotechnology , porosity , scanning electron microscope , composite material , organic chemistry , catalysis , porous medium , chemistry , physics , optics , composite number , engineering
Abstract Hierarchical carbon materials with functional groups residing at the surface are prepared for the first time by using nanostructured silica materials as templates in combination with hydrothermal carbonization at mild temperatures (180 °C). Different carbon morphologies (e.g., macroporous casts, hollow spheres, carbon nanoparticles, and mesoporous microspheres) can be obtained by simply altering the polarity of the silica surface. The surface functionality and hydrophilicity of the resulting materials are assessed by Fourier transform IR spectroscopy, X‐ray photoelectron analysis, and water porosimetry. Raman spectroscopy and X‐ray diffraction measurements show that the materials are of the carbon‐black type, similar to charcoal.