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

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posted on 2023-06-09, 22:07 authored by Manoj TripathiManoj Tripathi, Luca Valentini, Yuanyang Rong, Silvia Bittolo Bon, Maria F Pantano, Giorgio Speranza, Roberto Guarino, David Novel, Erica Iacob, Wei Liu, Victor Micheli, Alan DaltonAlan Dalton, Nicola M Pugno
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.

History

Publication status

  • Published

File Version

  • Published version

Journal

International Journal of Molecular Sciences

ISSN

1661-6596

Publisher

MDPI

Issue

22

Volume

21

Page range

1-18

Article number

a8585

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2020-11-10

First Open Access (FOA) Date

2020-11-18

First Compliant Deposit (FCD) Date

2020-11-09

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