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The effect of compressed CO2 on the self-assembly of surfactants for facile preparation of ordered mesoporous carbon materials

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Abstract

The effect of compressed CO2 on the properties of ordered mesoporous carbon (OMC) was investigated based on the self-assembly of surfactants in aqueous solution under mild conditions, and the acidic or basic conditions commonly used in traditional methods were substituted by compressed CO2. Compressed CO2 acts as both a physiochemical additive and a reagent to produce an acid catalyst in the synthesis. This new one-pot assembly approach can efficiently adjust the porous characteristics of OMC by employing different amounts of compressed CO2, and the self-assembly mechanism is proposed. The spherical micelles formed by triblock copolymer Pluronic F127 serve as a structure-directing agent for the controllable synthesis of nanomaterials. Resorcinol/phloroglucinol and formaldehyde are used as carbon-yielding components. It was found that CO2 can penetrate into the hydrocarbon-chain region of the F127 micelles, leading to template swelling and influencing the properties of OMC. The surfactant and precursors attracted by H-bonding interactions self-assemble and produce OMC after polymerization and carbonization. The resulting OMC as a supercapacitor electrode material exhibits outstanding specific capacitances, and the electrochemical performances change as the structural properties are varied.

Graphical abstract: The effect of compressed CO2 on the self-assembly of surfactants for facile preparation of ordered mesoporous carbon materials

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Publication details

The article was received on 13 Sep 2017, accepted on 05 Oct 2017 and first published on 05 Oct 2017


Article type: Paper
DOI: 10.1039/C7SM01839H
Citation: Soft Matter, 2017, Advance Article
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    The effect of compressed CO2 on the self-assembly of surfactants for facile preparation of ordered mesoporous carbon materials

    X. Huang, W. Li, S. Li, C. Wang, M. Zhang, Sen Luan, X. Hou and Q. Wang, Soft Matter, 2017, Advance Article , DOI: 10.1039/C7SM01839H

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