Detection and Study of Single Water/Oil Nanoemulsion Droplet by Electrochemical Collisions on an Ultramicroelectrode

Nhung T.T. Hoang; Thy L.T. Ho; Jun Hui Park; Byung Kwon Kim

doi:10.1016/j.electacta.2017.05.135

Detection and Study of Single Water/Oil Nanoemulsion Droplet by Electrochemical Collisions on an Ultramicroelectrode

Nhung T.T. Hoang, Thy L.T. Ho, Jun Hui Park, Byung Kwon Kim

Department of Chemistry & Nanoscience

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

31 Scopus citations

Abstract

Herein, for the first time, research on water-in-oil (water/oil) emulsion droplets by electrochemical analysis has been reported. When the water/1,2-dichloroethane emulsion droplets collided with an ultramicroelectrode (UME), the blocking property of the droplets resulted in a “staircase” current decrease. Each “staircase” current decrease is associated with the collision of an emulsion droplet with the UME surface. The experimental collision frequency was proportional to the concentration of the emulsion droplet. In addition, the size of each water droplet was estimated from the magnitude of the “staircase” current decrease and the simulation data. Results obtained from the collision signals provide information about the size of each single droplet (nano- to micro-) and the pM level concentrations of the water droplets in the organic continuous phase.

Original language	English
Pages (from-to)	128-132
Number of pages	5
Journal	Electrochimica Acta
Volume	245
DOIs	https://doi.org/10.1016/j.electacta.2017.05.135
State	Published - 10 Aug 2017

Bibliographical note

Funding Information:
This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2016R1D1A1B03931670, NRF-2015R1C1A1A01055250).

Publisher Copyright:
© 2017 Elsevier Ltd

Keywords

Droplet sensing
Emulsion blocking
Single emulsion detection
Single particle nano-impact
Water in oil emulsion

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10.1016/j.electacta.2017.05.135

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title = "Detection and Study of Single Water/Oil Nanoemulsion Droplet by Electrochemical Collisions on an Ultramicroelectrode",

abstract = "Herein, for the first time, research on water-in-oil (water/oil) emulsion droplets by electrochemical analysis has been reported. When the water/1,2-dichloroethane emulsion droplets collided with an ultramicroelectrode (UME), the blocking property of the droplets resulted in a “staircase” current decrease. Each “staircase” current decrease is associated with the collision of an emulsion droplet with the UME surface. The experimental collision frequency was proportional to the concentration of the emulsion droplet. In addition, the size of each water droplet was estimated from the magnitude of the “staircase” current decrease and the simulation data. Results obtained from the collision signals provide information about the size of each single droplet (nano- to micro-) and the pM level concentrations of the water droplets in the organic continuous phase.",

keywords = "Droplet sensing, Emulsion blocking, Single emulsion detection, Single particle nano-impact, Water in oil emulsion",

author = "Hoang, {Nhung T.T.} and Ho, {Thy L.T.} and Park, {Jun Hui} and Kim, {Byung Kwon}",

note = "Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2016R1D1A1B03931670, NRF-2015R1C1A1A01055250). Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

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doi = "10.1016/j.electacta.2017.05.135",

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AU - Hoang, Nhung T.T.

AU - Ho, Thy L.T.

AU - Park, Jun Hui

AU - Kim, Byung Kwon

N1 - Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2016R1D1A1B03931670, NRF-2015R1C1A1A01055250). Publisher Copyright: © 2017 Elsevier Ltd

PY - 2017/8/10

Y1 - 2017/8/10

N2 - Herein, for the first time, research on water-in-oil (water/oil) emulsion droplets by electrochemical analysis has been reported. When the water/1,2-dichloroethane emulsion droplets collided with an ultramicroelectrode (UME), the blocking property of the droplets resulted in a “staircase” current decrease. Each “staircase” current decrease is associated with the collision of an emulsion droplet with the UME surface. The experimental collision frequency was proportional to the concentration of the emulsion droplet. In addition, the size of each water droplet was estimated from the magnitude of the “staircase” current decrease and the simulation data. Results obtained from the collision signals provide information about the size of each single droplet (nano- to micro-) and the pM level concentrations of the water droplets in the organic continuous phase.

AB - Herein, for the first time, research on water-in-oil (water/oil) emulsion droplets by electrochemical analysis has been reported. When the water/1,2-dichloroethane emulsion droplets collided with an ultramicroelectrode (UME), the blocking property of the droplets resulted in a “staircase” current decrease. Each “staircase” current decrease is associated with the collision of an emulsion droplet with the UME surface. The experimental collision frequency was proportional to the concentration of the emulsion droplet. In addition, the size of each water droplet was estimated from the magnitude of the “staircase” current decrease and the simulation data. Results obtained from the collision signals provide information about the size of each single droplet (nano- to micro-) and the pM level concentrations of the water droplets in the organic continuous phase.

KW - Droplet sensing

KW - Emulsion blocking

KW - Single emulsion detection

KW - Single particle nano-impact

KW - Water in oil emulsion

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DO - 10.1016/j.electacta.2017.05.135

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SN - 0013-4686

VL - 245

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JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Detection and Study of Single Water/Oil Nanoemulsion Droplet by Electrochemical Collisions on an Ultramicroelectrode

Abstract

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Keywords

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