Direct Electron Transfer of Cytochrome c on ZrO2 Nanoparticles Modified Glassy Carbon Electrode

In this study we used of nanotechnology, electrochemistry and biology for investigation of direct electron transfer of cytochrome c (cyt c) on ZrO2 nanoparticles (Nps) modified glassy carbon electrode (GCE). Properties of Synthesized ZrO2 nanoparticles were investigated by X-ray diffraction (XRD) an...

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Bibliographic Details
Published in:International journal of electrochemical science 2012-08, Vol.7 (8), p.7033-7044
Main Authors: Mohseni, Gholamreza, Negahdary, Masoud, Malekzadeh, Roya, Manoochehri, Jamal, Hadaegh, Amirhossein, Sayad, Arezou, Akbari-dastjerdi, Hajar, Fazilati, Mohamad, Rezaei-Zarchi, Saeed
Format: Article
Language:English
Subjects:
Bioelectrochemistry
Cytochrome c
Glassy Carbon Electrode
ZrO2 Nps
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Summary:In this study we used of nanotechnology, electrochemistry and biology for investigation of direct electron transfer of cytochrome c (cyt c) on ZrO2 nanoparticles (Nps) modified glassy carbon electrode (GCE). Properties of Synthesized ZrO2 nanoparticles were investigated by X-ray diffraction (XRD) and UV-visible devices. Direct electrochemistry of the modified GCE with Cyt c and ZrO2 nanoparticles achieved and formal potential (E0) calculated as: -117.5 mV versus reference electrode. Protein structure of cytochrome c with heme center could change oxidative iron state (Fe3+) to reductive state (Fe2+) and vice versa by electron transfer. We used of this electron transfer in designing a biosensor for hydrogen peroxide (H2O2) detection. The linear dependence of cathodic peak on the H2O2 concentration was observed in the range of 40 to 270μM; also designed biosensor showed a good reproducibility and stability.
ISSN:1452-3981
1452-3981
DOI:10.1016/S1452-3981(23)15766-X