High-Surface-Area, Emulsion-Templated Carbon Foams by Activation of polyHIPEs Derived from Pickering Emulsions

Carbon foams displaying hierarchical porosity and excellent surface areas of >1400 m2/g can be produced by the activation of macroporous poly(divinylbenzene). Poly(divinylbenzene) was synthesized from the polymerization of the continuous, but minority, phase of a simple high internal phase Picker...

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Published inMaterials Vol. 9; no. 9; p. 776
Main Authors Woodward, Robert T, Luca, François De, Roberts, Aled D, Bismarck, Alexander
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2016
Subjects
Activation
Carbon
Carbonization
Chemistry
Customizing
Emulsions
Foams
Polymerization
Polymers
Precursors
Surface area
Surfactants
United Kingdom > UK
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Summary:Carbon foams displaying hierarchical porosity and excellent surface areas of >1400 m2/g can be produced by the activation of macroporous poly(divinylbenzene). Poly(divinylbenzene) was synthesized from the polymerization of the continuous, but minority, phase of a simple high internal phase Pickering emulsion. By the addition of KOH, chemical activation of the materials is induced during carbonization, producing Pickering-emulsion-templated carbon foams, or carboHIPEs, with tailorable macropore diameters and surface areas almost triple that of those previously reported. The retention of the customizable, macroporous open-cell structure of the poly(divinylbenzene) precursor and the production of a large degree of microporosity during activation leads to tailorable carboHIPEs with excellent surface areas.
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ISSN:1996-1944
DOI:10.3390/ma9090776(registeringDOI)