Fabrication of ordered mesoporous carbons with tunable pore architecture by the cosolvent
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Ordered mesoporous carbons (OMCs) with tunable mesophase were prepared by a novel cosolvent method using low molecular resin as carbon precursor, and P123(Poly(ethyleneoxide)-poly(propyleneoxide)-poly(ethyleneoxide)triblock copolymers, EO20PO70EO20) as a template via an Evaporation-induced Self-assembly Process (EISA). The results show that the pore structure of OMCs could be oriented from 2D hexagonal (p6mm) to 2D centered rectangular (C2mm) structure. Two key descriptors of mesophase were identified. One is the ratio of PEO/PPO of triblock copolymer, and the other one is cosolvent, both of which would have effects on the interface of mesophase during the EISA process. Furthermore, it was confirmed that the ordered mesophase could be obtained in a very short time during the EISA process even accompanied by the microemulsion phenomenon.
KeywordsOrdered mesoporous carbons Mesophase PEO/PPO Cosolvent strategy
The research was supported by the financial support of the Shanxi Province Foundation for Youths (2015021072), the Program for the Innovative Talents of Taiyuan Institute of Technology (TITXD201403), Special Youth Science and Technology Innovation (QKCZ201635), National Training Programs of Innovation and Entrepreneurship for Undergraduates (201614101004), the Fund for Shanxi “1331 Project” Key Subjects Construction and greatly thanks Fund of Testing from Institute of High Energy and Physics for SAXS measurements assistance.