Surface modification of nanocast ordered mesoporous carbons through a wet oxidation method

An ordered mesoporous carbon was synthesized by chemical vapor deposition using SBA-15 silica as solid template and propylene as carbon precursor. It was submitted to several liquid oxidation treatments by means of HNO3 and H2O2 under different oxidation conditions in order to modify its surface che...

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Bibliographic Details
Published in:Carbon (New York) 2013-10, Vol.62, p.193-203
Main Authors: Sánchez-Sánchez, A., Suárez-García, F., Martínez-Alonso, A., Tascón, J.M.D.
Format: Article
Language:English
Subjects:
Carbon
Chemical vapor deposition (including plasma-enhanced cvd, mocvd, etc.)
Chemistry
Colloidal state and disperse state
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
General and physical chemistry
Materials science
Methods of deposition of films and coatings
film growth and epitaxy
Nanostructure
Oxidation
Physics
Porous materials
Specific materials
Surface chemistry
Surface layer
Surface treatments
Texture
Wet oxidation
X-rays
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Summary:An ordered mesoporous carbon was synthesized by chemical vapor deposition using SBA-15 silica as solid template and propylene as carbon precursor. It was submitted to several liquid oxidation treatments by means of HNO3 and H2O2 under different oxidation conditions in order to modify its surface chemistry while keeping its structure and porous texture as unmodified as possible. Original and modified OMC samples were characterized using different techniques such as nitrogen adsorption at - 196 ºC, X-ray diffraction, scanning electron microscopy, elemental analysis, temperature programmed desorption and X-ray photoelectron spectroscopy. A higher amount of oxygen functional groups was introduced on the material surface by using HNO3 than by means of H2O2, but the original surface texture and structural arrangement were kept unchanged in both cases.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2013.06.011