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A Facile One‐Step Method for the Synthesis of Reduced Graphene Oxide Nanocomposites by NADH as Reducing Agent and Its Application in NADH Sensing
Author(s) -
Tabrizi Mahmoud Amouzadeh,
Zand Zahra
Publication year - 2014
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.201300370
Subject(s) - graphene , nicotinamide adenine dinucleotide , amperometry , oxide , scanning electron microscope , biosensor , reducing agent , electrochemistry , materials science , nanocomposite , raman spectroscopy , redox , nuclear chemistry , chemical engineering , electrode , detection limit , nad+ kinase , nanotechnology , inorganic chemistry , chemistry , organic chemistry , chromatography , composite material , physics , optics , engineering , metallurgy , enzyme
Here, we report a green and eco ‐ friendly approach to synthesize reduced graphene oxide (rGO) via a mild hydrothermal process using nicotinamide adenine dinucleotide (NADH) as a reducing agent. The obtained rGO was characterized by UV‐visible absorption spectroscopy (UV‐vis), X‐ray diffraction spectroscopy, atomic force microscopy (AFM) and scanning electron microscopy (SEM). Electrochemical experiments indicated that the rGO/GC electrode exhibited an excellent electrocatalytic activity towards the oxidation of NADH, which can be attributed to the excellent electrical conductivity and high specific surface area of the rGO composite. The resulting biosensor showed highly sensitive amperometric response to NADH with a low detection limit (0.6 µM).