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High capacity oil sorption by graphene capsules

Abstract

We report a chemical vapor deposition synthesis of graphene capsules (GCs) in size of tens to thousands of nanometers, and their oil adsorption performance. MgO particles with different particle size are used as templates to produce GCs with different size. At larger GC size and higher pore volume, higher oil capacity is obtained. The highest oil adsorption capacity achieved by the GCs is 156 gdiesel/gGC, 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 a capillary adsorption with limited entrance might have contributed to the high capacity oil adsorption by GCs.

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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, Accepted Manuscript
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    High capacity oil sorption by graphene capsules

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

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