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Hydrogen Peroxide Detection Using Prussian Blue‐modified 3D Pyrolytic Carbon Microelectrodes
Author(s) -
Esmail Tehrani Sheida,
Quang Nguyen Long,
Garelli Giulia,
Jensen Bettina M.,
Ruzgas Tautgirdas,
Emnéus Jenny,
Sylvest Keller Stephan
Publication year - 2021
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.202100387
Subject(s) - prussian blue , pyrolytic carbon , amperometry , microelectrode , hydrogen peroxide , detection limit , multielectrode array , electrode , electrochemistry , carbon fibers , biosensor , materials science , chemistry , inorganic chemistry , nanotechnology , pyrolysis , chromatography , organic chemistry , composite number , composite material
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