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Engineering Graphene Oxide/Water Interface from First Principles to Experiments for Electrostatic Protective

Luca Valentini1, Silvia Bittolo Bon1, Giacomo Giorgi2

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Summary
This summary is machine-generated.

Graphene oxide interacts with water droplets, generating an electric field. This discovery could lead to antiviral fabrics that neutralize airborne viruses like SARS-CoV-2.

Keywords:
composite fiberselectrical propertiesgraphene oxidemechanical propertieswater interface

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Physics

Background:

  • The COVID-19 pandemic highlighted the transmission of SARS-CoV-2 via respiratory droplets.
  • Understanding virus-material interactions is crucial for developing effective protective measures.

Purpose of the Study:

  • To investigate the interaction between water molecules and graphene oxide (GO) at a fundamental level.
  • To explore the potential of GO-based materials for antiviral applications.

Main Methods:

  • First-principles calculations were employed to model water-graphene oxide interactions.
  • Experimental validation using GO polymer composite films and aerosol exposure.
  • Development of electrostatic composite fibers using GO and poly(methyl methacrylate) (PMMA).

Main Results:

  • Theoretical calculations predicted an electric field generation upon water molecule contact with GO.
  • Experimental results confirmed voltage generation (up to -2 V) from GO composite films exposed to water aerosol.
  • Successful fabrication of electrostatic composite fibers incorporating GO and PMMA.

Conclusions:

  • Graphene oxide's interaction with water generates a measurable electric field.
  • GO-based electrostatic fibers show promise for creating antiviral protective fabrics.
  • This technology could offer protection against airborne viruses with charged structures, such as SARS-CoV-2.