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 language | English (US) |
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Pages (from-to) | 2015-2020 |
Number of pages | 6 |
Journal | Electroanalysis |
Volume | 25 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2013 |
Keywords
- ISTC
- PtZn alloy
- Nanostructured microelectrode
- Electrochemical alloying/dealloying
- Nanoporous platinum
- Ionic liquid
ASJC Scopus subject areas
- Analytical Chemistry
- Electrochemistry