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Insight into Structure-Dependent Self-Activation Mechanism in a Confined Nanospace of Core–Shell Nanocomposites

Authors

  • Qiang Sun,

    1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, P. R. China, Tel/Fax: +86-411-84986112
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  • Wen-Cui Li,

    1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, P. R. China, Tel/Fax: +86-411-84986112
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  • An-Hui Lu

    Corresponding author
    1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, P. R. China, Tel/Fax: +86-411-84986112
    • State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, P. R. China, Tel/Fax: +86-411-84986112.
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Abstract

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An unusual hollow core expansion through in situ self-activation in a confined nanospace is observed, which is due to the different physical and chemical properties of the core and shell. The in situ generated gas molecules (e.g., CO2, H2O) preferentially assemble in the hollow core and create immense pressure, which can gasify the formed carbon shells, resulting in substantially increased porosity and a hollow cavity.

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