Electrocatalytic oxidation behavior of NADH at Pt/Fe3O4/reduced-graphene oxide nanohybrids modified glassy carbon electrode and its determination.
We have developed Pt/Fe3O4/reduced-graphene oxide nanohybrids modified glassy carbon (Pt/Fe3O4/RGO/GC) electrode as a novel system for the preparation of electrochemical sensing platform. Characterization of as-made composite was determined using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron microscopy (TEM), atomic force microscopy (AFM) and energy-dispersive analysis of X-ray (EDAX) where the Pt, Fe, Si, O and C elements were observed. The Pt/Fe3O4/RGO/GC electrode was characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Due to the synergistic effect between Pt, Fe3O4 and RGO, the nanohybrid exhibited excellent performance toward dihydronicotinamide adenine dinucleotide (NADH) oxidation in 0.1M phosphate buffer solution, pH7.0, with a low detection limit of 5nM.
Department of Chemistry, Faculty of Sciences, Ilam University, Ilam, 69315516, Iran. Electronic address: mahmoudroushani@yahoo.com.
Mahmoud
M
Roushani
Department of Chemistry, Faculty of Sciences, Yasouj University, Yasouj, 7591874831, Iran.
S Jafar
SJ
Hoseini
Department of Chemistry, Faculty of Sciences, Ilam University, Ilam, 69315516, Iran.
Mitra
M
Azadpour
Department of Chemistry, Faculty of Sciences, Yasouj University, Yasouj, 7591874831, Iran.
Vahid
V
Heidari
Department of Chemistry, Faculty of Sciences, Yasouj University, Yasouj, 7591874831, Iran.
Mehrangiz
M
Bahrami
Department of Chemistry, Faculty of Sciences, Yasouj University, Yasouj, 7591874831, Iran.
Mahnaz
M
Maddahfar
D002384:Catalysis; D004560:Electricity; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D005290:Ferric Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D006108:Graphite / Q000138:chemical synthesis / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D018625:Microscopy, Atomic Force; D009243:NAD / Q000032:analysis*; D053758:Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010984:Platinum / Q000737:chemistry*; D011437:Propylamines / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
D005290:Ferric Compounds; D011437:Propylamines; D012821:Silanes; D009243:NAD; C000499:ferric oxide; D010984:Platinum; D006108:Graphite; C477625:amino-propyl-triethoxysilane
Chemical modified electrode; Dihydronicotinamide adenine dinucleotide; Electrocatalytic; Pt/Fe(3)O(4)/RGO