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单个氧化石墨烯片的电化学碰撞：一项分析性和基础性研究。

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

作者信息

Renault Christophe, Lemay Serge G

机构信息

MESA+ Institute for Nanotechnology University of Twente P.O. Box 127 7500 AE Enschede The Netherlands.

Physique de la Matière Condensée Ecole Polytechnique, CNRS, IP Paris 91128 Palaiseau France.

出版信息

ChemElectroChem. 2020 Jan 2;7(1):69-73. doi: 10.1002/celc.201901606. Epub 2019 Dec 17.

DOI:10.1002/celc.201901606
PMID:31998598
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6973065/
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.

摘要

我们提出了一种基于电化学碰撞的分析方法，用于检测水悬浮液中的单个氧化石墨烯（GO）片层。发现碰撞速率对氧化还原介质和支持电解质浓度呈现出复杂的依赖性。结合数值模拟对多次碰撞事件进行分析，可以提取定量信息，例如悬浮液中GO片层的摩尔浓度以及单个片层尺寸的估计值。我们还通过数值模拟证明了二维阻挡物体上边缘效应的存在。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ec6a/6973065/1c0a392c9638/CELC-7-69-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ec6a/6973065/b3192fddeeb0/CELC-7-69-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ec6a/6973065/0dd35598d4b1/CELC-7-69-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ec6a/6973065/1c0a392c9638/CELC-7-69-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ec6a/6973065/b3192fddeeb0/CELC-7-69-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ec6a/6973065/0dd35598d4b1/CELC-7-69-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ec6a/6973065/1c0a392c9638/CELC-7-69-g003.jpg

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