Manganese Oxide Nanoparticles/Reduced Graphene Oxide as Novel Electrochemical Platform for Immobilization of FAD and its Application as Highly Sensitive Persulfate Sensor | Zendy

Mansouri Majd Samira | Zendy; Salimi Abdollah | Zendy; Astinchap Bandar | Zendy

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Manganese Oxide Nanoparticles/Reduced Graphene Oxide as Novel Electrochemical Platform for Immobilization of FAD and its Application as Highly Sensitive Persulfate Sensor

Author(s) -

Mansouri Majd Samira,

Salimi Abdollah,

Astinchap Bandar

Publication year - 2016

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.201500421

Subject(s) - graphene , persulfate , oxide , amperometry , detection limit , nanoparticle , electrochemistry , inorganic chemistry , materials science , electrode , chemistry , nuclear chemistry , catalysis , chemical engineering , nanotechnology , chromatography , organic chemistry , engineering , metallurgy

In this study, manganese oxide nanoparticles/reduced graphene oxide(MnOxNPs/rGO) was used as support for strong immobilization of flavin adenine dinucleotide(FAD). A thin film of rGO cast on the electrode surface, followed by performing electrodeposition of MnOxNPs at applied constant potential of +1.4 V vs . Ag/AgCl for 200 s. Finally, FAD was electrodeposited onto the rGO/MnOxNPs film by potential cycling between 1.0 to −1.0 V in solution containing 1 mg ml −1 FAD. Electrochemical properties and catalytic activity of GCE/rGO‐MnOxNPs/FAD toward persulfate (S 2 O 8 2− ) reduction was investigated. Under optimized condition, the concentration calibration range, detection limit, and sensitivity were 0.1 μM–2 mM, 90 nM and 125.8 nA/μM, respectively, using hydrodynamic amperometry technique.

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