Triple hierarchical micro–meso–macroporous carbonaceous foams bearing highly monodisperse macroporosity

The limited coalescence phenomenon occurring in Pickering emulsions stabilized by solid particles allows preparing monolithic silica foams with nearly monodisperse macroscopic voids and also meso- and microporosities. After soaking of these foam hard templates with a phenolic resin, partially graphi...

Full description

Saved in:
Bibliographic Details
Published in:Carbon (New York) 2015-09, Vol.91, p.311-320
Main Authors: Ungureanu, Simona, Birot, Marc, Deleuze, Hervé, Schmitt, Véronique, Mano, Nicolas, Backov, Rénal
Format: Article
Language:English
Subjects:
Carbon
Chemical Sciences
Coalescence
Condensed Matter
Foams
Material chemistry
Phenolic resins
Physics
Polymers
Porosity
Silicon dioxide
Specific surface
Voids
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The limited coalescence phenomenon occurring in Pickering emulsions stabilized by solid particles allows preparing monolithic silica foams with nearly monodisperse macroscopic voids and also meso- and microporosities. After soaking of these foam hard templates with a phenolic resin, partially graphitized interconnected porous carbon monoliths can be obtained easily. Like the silica templates, these carbon monoliths possess a hierarchical, triple porosity. Mercury intrusion porosimetry reports a macropore volume fraction of 45–70% with a narrow pore size distribution, while their specific surface area values lie between 700 and 900m2g−1 and their mesopore specific surface area between 200 and 500m2g−1. This approach allows preparing hierarchical porous carbon whose mesoporosity does not require using any soft template to organize the resin precursor.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2015.04.092