Free-standing graphene oxide and carbon nanotube hybrid papers with enhanced electrical and mechanic performance and their synergy in polymer laminates

Tripathi, Manoj, Valentini, Luca, Rong, Yuanyang, Bittolo Bon, Silvia, Pantano, Maria F, Speranza, Giorgio, Guarino, Roberto, Novel, David, Iacob, Erica, Liu, Wei, Micheli, Victor, Dalton, Alan B and Pugno, Nicola M (2020) Free-standing graphene oxide and carbon nanotube hybrid papers with enhanced electrical and mechanic performance and their synergy in polymer laminates. International Journal of Molecular Sciences, 21 (22). a8585 1-18. ISSN 1661-6596

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Abstract

Hybrid nanomaterials fabricated by the heterogeneous integration of 1D (carbon nanotubes) and 2D (graphene oxide) nanomaterials showed synergy in electrical and mechanical properties. Here, we reported the infiltration of carboxylic functionalized single-walled carbon nanotubes (C-SWNT) into free-standing graphene oxide (GO) paper for better electrical and mechanical properties than native GO. The stacking arrangement of GO sheets and its alteration in the presence of C-SWNT were comprehensively explored through scanning electron microscopy, X-ray photoelectron spectroscopy (XPS) and X-ray diffraction. The C-SWNTs bridges between different GO sheets produce a pathway for the flow of electrical charges and provide a tougher hybrid system. The nanoscopic surface potential map reveals a higher work function of the individual functionalised SWNTs than surrounded GO sheets showing efficient charge exchange. We observed the enhanced conductivity up to 50 times and capacitance up to 3.5 times of the hybrid structure than the GO-paper. The laminate of polystyrene composites provided higher elastic modulus and mechanical strength when hybrid paper is used, thus paving the way for the exploitation of hybrid filler formulation in designing polymer composites.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 10 Nov 2020 11:50
Last Modified: 18 Nov 2020 11:30
URI: http://sro.sussex.ac.uk/id/eprint/94940

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