Nano-Roughening a Pt Disk Microelectrode via Electrochemical Alloying-Dealloying in Ionic Liquid Electrolyte

Junhua Jiang, Xinying Wang, Lei Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

A green chemistry method to nano-roughen a Pt disk microelectrode has been successfully developed via electrochemical alloying-dealloying in an ionic liquid bath comprising of ZnCl2 and 1-ethyl-3-methylimidazolium chloride. The nano-roughened Pt layer possesses bark-like nanoporous structures characteristic of nano-sized aggregates separated by nano-cracks whose width ranging from around 50 to 200 nm. The nano-roughened microelectrode possesses high surface area and diffusional properties typical of a microelectrode. Electrochemical oxidation and reduction of nitrite have been studied as an example for demonstrating that the nano-roughened microelectrode is a promising technique for electroanalysis and electrocatalysis applications.
Original languageEnglish (US)
Pages (from-to)2015-2020
Number of pages6
JournalElectroanalysis
Volume25
Issue number8
DOIs
StatePublished - Aug 2013

Keywords

  • ISTC
  • PtZn alloy
  • Nanostructured microelectrode
  • Electrochemical alloying/dealloying
  • Nanoporous platinum
  • Ionic liquid

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

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