Aerogels Based on Microwave Plasma Torch Synthesized Graphene

Fail R. Sultanov; Z.A. Mansurov; S.S. Pei; S.C. Chang; S. Xing; F. Robles-Hernandez; Y.W. Chi; K.P. Huang

doi:10.4028/www.scientific.net/AST.98.131

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Aerogels Based on Microwave Plasma Torch Synthesized Graphene
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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 98Aerogels Based on Microwave Plasma Torch...

Aerogels Based on Microwave Plasma Torch Synthesized Graphene

Abstract:

In this research aerogels were synthesized by homogenization of carbon nanotubes and chitosan under ultrasonic treatment and active magnetic stirring, followed by freeze-drying in order to remove the liquid from its structure. Freeze-drying is characterized by a certain ratio of pressure and temperature at which the solid phase, in our case - the ice, turns into a gas without passing through a liquid phase. Freeze-drying was carried out at a temperature of-5 ° C and a pressure of 30-80 Pa. After freeze-drying which lasted for 20 hours, the as-obtained aerogels were carbonized at temperature of 800 °C in an inert atmosphere. Surface morphology of resulting aerogels was studied using scanning electron microscopy. The hydrophobicity and sorption capacity of these aerogels to organic liquids characterized by different densities were investigated. In addition, composite aerogels with the presence of graphene layers in the structure were obtained and the influence of introduction of graphene on aerogel’s properties was analyzed. It was found that composite aerogels based on graphene and carbon nanotubes with chitosan as a glue matrix are characterized by a better-developed porosity of surface with a smaller pore sizes, and their sorption capacity for organic liquids is also higher compared with the aerogels based on carbon nanotubes.

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Periodical:

Advances in Science and Technology (Volume 98)

Pages:

131-135

DOI:

https://doi.org/10.4028/www.scientific.net/AST.98.131

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Online since:

October 2016

Authors:

Fail R. Sultanov*, Z.A. Mansurov, S.S. Pei, S.C. Chang, S. Xing, F. Robles-Hernandez, Y.W. Chi, K.P. Huang

Keywords:

Aerogel, Carbon Nanotubes, Chitosan, Freeze-Drying, Graphene

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References

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