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Issue 34, 2017
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High capacity oil adsorption by graphene capsules

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Abstract

We report on a chemical vapor deposition synthesis of graphene capsules (GCs) in sizes of tens to thousands of nanometers and their oil adsorption performance. MgO particles with different particle sizes are used as templates to produce GCs with different sizes. At a larger GC size and higher pore volume, a higher oil capacity is obtained. The highest oil adsorption capacity achieved by the GCs is 156 gdiesel gGC−1, which is much higher than that obtained by expanded graphite. The adsorption capacity proportionally increases as the viscosity of the fluid increases. Both the capsule structure and the viscosity of oil are relative to the adsorption capacity, showing that capillary adsorption with a limited entrance might have contributed to the high capacity oil adsorption by GCs.

Graphical abstract: High capacity oil adsorption by graphene capsules

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Publication details

The article was received on 19 Jun 2017, accepted on 26 Jul 2017 and first published on 27 Jul 2017


Article type: Paper
DOI: 10.1039/C7NR04383J
Citation: Nanoscale, 2017,9, 12647-12651
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    High capacity oil adsorption by graphene capsules

    G. Ning, X. Ma, M. Wang and Y. Li, Nanoscale, 2017, 9, 12647
    DOI: 10.1039/C7NR04383J

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