## Abstract Ordered mesoporous carbon CโFDUโ18s with tunable pore sizes of 12โ33 nm and pore wall thicknesses of 5โ11 nm were synthesized by using poly(ethylene oxide)โblockโpoly(styrene) (PEOโ__b__โPS) diblock copolymers with various PS chain lengths as templates and through the evaporation induce
Simple hydrothermal synthesis of ordered mesoporous carbons from resorcinol and hexamine
โ Scribed by Dan Liu; Jia-Heng Lei; Li-Ping Guo; Ke-Jian Deng
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 813 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0008-6223
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โฆ Synopsis
Hexamine has been used as a release source of formaldehyde towards the self-assembly synthesis of resorcinol/formaldehyde (RF) resin-based mesoporous carbons under hydrothermal conditions. The obtained mesoporous carbons exhibit the micrometer-sized, sphere-like morphology and a high surface area. The use of hexamine instead of formaldehyde efficiently harnesses the organic-organic self-assembly of RF resin and block copolymer. Ordered mesostructures can be obtained over a wide range of hydrothermal temperature without the extra addition of inorganic bases or acids as catalysts. The method described here has the advantage of being a one-pot procedure and only involves the use of several organic precursors in an aqueous system.
๐ SIMILAR VOLUMES
A mesoporous carbon membrane was prepared by the organic sol-gel process, ambient drying and carbonization. Resorcinol was polymerized with formaldehyde and formed a sol. The sol was cast on a porous fly-ash ceramic support by dip-coating. After ambient drying and carbonization, a carbon membrane wa