Hydrogen Peroxide Detection Using Prussian Blue‐Modified 3D Pyrolytic Carbon Microelectrodes

Sheida Esmail Tehrani, Long Quang Nguyen, Giulia Garelli, Bettina M. Jensen, Tautgirdas Ruzgas, Jenny Emnéus, Stephan Sylvest Keller

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A highly sensitive amperometric Prussian blue-based hydrogen peroxide sensor was developed using 3D pyrolytic carbon microelectrodes. A 3D printed multielectrode electrochemical cell enabled simultaneous highly reproducible Prussian blue modification on multiple carbon electrodes. The effect of oxygen plasma pre-treatment and deposition time on Prussian blue electrodeposition was studied. The amperometric response of 2D and 3D sensors to the addition of hydrogen peroxide in µM and sub-µM concentrations in phosphate buffer was investigated. A high sensitivity comparable to flow injection systems and a detection limit of 0.16 µM was demonstrated with 3D pyrolytic carbon microelectrodes at stirred batch condition.
Original languageEnglish
JournalElectroanalysis
ISSN1040-0397
DOIs
Publication statusAccepted/In press - 2021

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