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

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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
Issue number12
Pages (from-to)2516-2528
Number of pages13
Publication statusPublished - 2021


  • Prussian blue
  • Hydrogen peroxide sensor
  • Amperometry
  • Pyrolytic carbon


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