An electrochemical biosensor developed for the online monitoring of H2O2 based on the reduced graphene oxide-cerium dioxide nanocomposite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F20%3A43917972" target="_blank" >RIV/62156489:43210/20:43917972 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26620/20:PU136657

Výsledek na webu

<a href="https://doi.org/10.37904/nanocon.2019.8613" target="_blank" >https://doi.org/10.37904/nanocon.2019.8613</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/nanocon.2019.8613" target="_blank" >10.37904/nanocon.2019.8613</a>

Jazyk výsledku

angličtina

Název v původním jazyce

An electrochemical biosensor developed for the online monitoring of H2O2 based on the reduced graphene oxide-cerium dioxide nanocomposite

Popis výsledku v původním jazyce

A biosensor was developed for monitoring H2O2 based on reduced Graphene Oxide-Cerium Oxide (rGO-CeO2) nanocomposite (NC). The NC shows catalytic effect on the electrochemical reduction of H2O2 at MINUS SIGN 0.3 V. The effect of the NC on the electrochemical reduction of H2O2 was studied by cyclic voltammetry and compared with bare glassy carbon (GC) and GC/r-GO. Moreover, to improve the signal a complex containing copper was incorporated in the dispersion of the nanocomposite which acts as a mediator. It was found that the electrochemical reduction of H2O2 takes place at less negative potential with increased peak current attitude at GC/r-GO-mediator. The developed sensor GC/r-GO-mediator, was applied for the continuous monitoring of H2O2 by chronoamperometry. The applied potential was MINUS SIGN 0.3 V which results in the enhanced sensitivity of the developed biosensor. The developed biosensor shows good stability, and reproducibility. The reproducibility of the developed electrode was evaluated by calculation of relative standard deviation value 6.77%. The linear range was found to be 3.4 - 23.48 µg/ml. Furthermore, limit of detection and limit of quantification were 0.68 µg/ml and 2.27 µg/ml respectively.

Název v anglickém jazyce

An electrochemical biosensor developed for the online monitoring of H2O2 based on the reduced graphene oxide-cerium dioxide nanocomposite

Popis výsledku anglicky

A biosensor was developed for monitoring H2O2 based on reduced Graphene Oxide-Cerium Oxide (rGO-CeO2) nanocomposite (NC). The NC shows catalytic effect on the electrochemical reduction of H2O2 at MINUS SIGN 0.3 V. The effect of the NC on the electrochemical reduction of H2O2 was studied by cyclic voltammetry and compared with bare glassy carbon (GC) and GC/r-GO. Moreover, to improve the signal a complex containing copper was incorporated in the dispersion of the nanocomposite which acts as a mediator. It was found that the electrochemical reduction of H2O2 takes place at less negative potential with increased peak current attitude at GC/r-GO-mediator. The developed sensor GC/r-GO-mediator, was applied for the continuous monitoring of H2O2 by chronoamperometry. The applied potential was MINUS SIGN 0.3 V which results in the enhanced sensitivity of the developed biosensor. The developed biosensor shows good stability, and reproducibility. The reproducibility of the developed electrode was evaluated by calculation of relative standard deviation value 6.77%. The linear range was found to be 3.4 - 23.48 µg/ml. Furthermore, limit of detection and limit of quantification were 0.68 µg/ml and 2.27 µg/ml respectively.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10406 - Analytical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

NANOCON 2019: Conference Proceedings

ISBN

978-80-87294-95-6

ISSN

2694-930X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

396-401

Název nakladatele

Tanger Ltd.

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

16. 10. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000664115400066