Direct fabrication of ordered mesoporous carbons with super-micropore/small mesopore using mixed triblock copolymers

• Ordered mesoporous carbons (OMCs) were prepared by mixed copolymers.
• OMCs have super-micropores and small mesopores ranging from 0.8 to 4 nm.
• OMCs have mesophase transition from c2 mm to p6 mm.

Ordered mesoporous carbons (OMCs) have been prepared by the strategy of evaporation-induced organic-organic self-assembly method by employing a mixture of amphiphilic triblock copolymers poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (PEO–PPO–PEO) and reverse PPO–PEO–PPO as templates, with soluble in ethanol, low-molecular-weight phenolic resin as precursor, followed by carbonization. It has been found that the as prepared OMCs with porosity that combines super-micropore and small mesopore size distributed from 0.8 to 4 nm, which bridges the pore size from 2 to 3 nm and also for the diversification of the soft-templating synthesis of OMCs. Furthermore, the results showed that the OMCs obtained have mesophase transition from cylindrical p6 mm to centered rectangular c2 mm structure by simply tuning the ratio of PPO–PEO–PPO/PEO–PPO–PEO.

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