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One-pot aqueous route to synthesize highly ordered cubic and hexagonal mesoporous carbons from resorcinol and hexamine
- Source :
-
Carbon . Feb2012, Vol. 50 Issue 2, p476-487. 12p. - Publication Year :
- 2012
-
Abstract
- Abstract: We proposed here a one-pot route to prepare resorcinol/formaldehyde (RF) resin-based carbon materials with highly ordered mesostructures in an aqueous media. Compared with other techniques, the synthesis is a single-step process; neither prepolymerization nor thermal solidification is needed. The crucial difference to the previous methods is that the commonly used formaldehyde is replaced with hexamine. Hexamine can serve as a release source of formaldehyde to control the kinetics of RF polymerization reaction. The combined use of resorcinol and hexamine allows the accelerated synthesis without disturbing the cooperative self-assembly of RF resin and amphiphilic triblock copolymer. A mesophase transformation from body-centered cubic () to 2-D hexagonal (p6m) structure can be achieved by simply adding 1,3,5-trimethylbenzene to the synthesis. Especially, this synthesis can be performed not only under weakly basic conditions but also under highly acidic conditions, despite that the acid-catalyzed synthesis will result in the formation of the product with a relatively low thermal stability. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00086223
- Volume :
- 50
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Carbon
- Publication Type :
- Academic Journal
- Accession number :
- 66945993
- Full Text :
- https://doi.org/10.1016/j.carbon.2011.09.002