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

Christophe Renault; Serge G. Lemay

doi:10.1002/celc.201901606

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

Christophe Renault^*, Serge G. Lemay^*

^*Corresponding author for this work

Bio electronics

Research output: Contribution to journal › Article › Academic › peer-review

19 Citations (Scopus)

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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 language	English
Pages (from-to)	69-73
Number of pages	5
Journal	ChemElectroChem
Volume	7
Issue number	1
DOIs	https://doi.org/10.1002/celc.201901606
Publication status	Published - 2 Jan 2020

Keywords

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

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Renault_et_al-2020-ChemElectroChemFinal published version, 996 KBLicence: CC BY

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AB - 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.

KW - UT-Hybrid-D

KW - impact electrochemistry

KW - migration

KW - single-entity electrochemistry

KW - size characterization

KW - graphene oxide

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IS - 1

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

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Keywords

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