The discrete single-entity electrochemistry of Pickering emulsions

So Dam Kim, Joon Ho Park, Hyokyum Ahn, Jeeho Lee, Chan Ho Shin, Woo Dong Jang, Byung Kwon Kim, Hyun S. Ahn

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Single-entity analysis is an important research topic in electrochemistry. To date, electrode collisions and subsequent electrode-particle interactions have been studied for many types of nano-objects, including metals, polymers, and micelles. Here we extend this nano-object electrochemistry analysis to Pickering emulsions for the first time. The electrochemistry of Pickering emulsions is important because the internal space of a Pickering emulsion can serve as a reactor or template; this leads to myriad possible applications, all the while maintaining mechanical stability far superior to what is exhibited by conventional emulsions. This work showed that Pickering emulsions exhibit similar hydrodynamic behavior to other nano-objects, despite the complex structure involving hard nanoparticle surfactants, and the electron-transport mechanism into the internal volume of Pickering emulsions was elucidated. The Pickering emulsion electrochemistry platform developed here can be applied to electrochemical nanomaterial synthesis, surmounting the challenges faced by conventional synthetic strategies involving normal emulsions.

Original languageEnglish
JournalNanoscale
DOIs
StateAccepted/In press - 2022

Bibliographical note

Funding Information:
This work was financially supported by the Basic Science Research Program through the National Research Foundation (NRF) of Korea (2020R1C1C1007409 and 2020R1A4A1017737 awarded to H.S. Ahn and 2021R1A2C4002069 awarded to B.-K. Kim).

Publisher Copyright:
© 2022 The Royal Society of Chemistry

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