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Heshmatollah Alinezhad

Heshmatollah Alinezhad

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Faculty of Chemistry
Address:
Phone: 9111144735

Research

Title
A non-enzymatic hydrogen peroxide sensor based on dendrimer functionalized magnetic graphene oxide decorated with palladium nanoparticles
Type
JournalPaper
Keywords
Hydrogen peroxide Non-enzymatic sensor Dendrimer Palladium nanoparticles Graphene oxide Iron oxide nanoparticles
Year
2020
Journal Applied Surface Science
DOI
Researchers Mehdi Baghayeri ، Heshmatollah Alinezhad ، mehrasa tarahomi ، Maryam Fayazi ، Masoud Ghanei-Motlahgh ، Behrooz Maleki

Abstract

In this study, magnetic graphene oxide functionalized with amine-terminated poly(amidoamine) dendrimer, decorated with palladium nanoparticles (GO-Fe3O4-PAMAM-Pd) has been utilized for non-enzymatic electrochemical determination of hydrogen peroxide (H2O2). For this purpose, the GO-Fe3O4-PAMAM-Pd composite material was immobilized on a glassy carbon electrode (GCE) and its electrocatalytic activity toward H2O2 reduction was evaluated with cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods. It was found that the presence of uniformly dispersed Pd nanoparticles on the magnetic GO nanosheets play a major role in the electrocatalytic performance of the constructed electrochemical sensor. Under optimum conditions, the designed sensor showed good electrochemical performance toward H2O2 reduction, offering extended linearity of 0.05 to 160 μM and a low detection limit of 0.01 μM. Besides, the sensor revealed good anti-interference property and high sensitivity toward H2O2 detection. The proposed electrode was also credibly employed for the determination of H2O2 in real water samples