Electrochemical Collisions of Individual Graphene Oxide Sheets: An Analytical and Fundamental Study

Christophe Renault*, Serge G. Lemay*

*Corresponding author for this work

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Abstract

We propose an analytical method based on electrochemical collisions to detect individual graphene oxide (GO) sheets in an aqueous suspension. The collision rate is found to exhibit a complex dependence on redox mediator and supporting electrolyte concentrations. The analysis of multiple collision events in conjunction with numerical simulations allows quantitative information to be extracted, such as the molar concentration of GO sheets in suspension and an estimate of the size of individual sheets. We also evidence by numerical simulation the existence of edge effects on a 2D blocking object.

Original languageEnglish
Pages (from-to)69-73
Number of pages5
JournalChemElectroChem
Volume7
Issue number1
DOIs
Publication statusPublished - 2 Jan 2020

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Keywords

  • UT-Hybrid-D
  • impact electrochemistry
  • migration
  • single-entity electrochemistry
  • size characterization
  • graphene oxide

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