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Environmentally Friendly Reduction of Graphene Oxide Using Tyrosine for Nonenzymatic Amperometric H 2 O 2 Detection
Author(s) -
Wang Qi,
Li Musen,
Szunerits Sabine,
Boukherroub Rabah
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.201300356
Subject(s) - ascorbic acid , graphene , amperometry , detection limit , x ray photoelectron spectroscopy , chemistry , hydrogen peroxide , nanomaterials , inorganic chemistry , oxide , electrochemistry , nuclear chemistry , fourier transform infrared spectroscopy , electrochemical gas sensor , electrode , materials science , chemical engineering , organic chemistry , nanotechnology , chromatography , engineering , food science
Herein, we report on the simultaneous reduction and functionalization of graphene oxide (GO) with environmentally friendly tyrosine through the direct reaction of GO with tyrosine (Tyr) at 100 °C for 24 h. The resultant material (rGO/Tyr) has been characterized using UV‐vis spectrometry, FTIR spectroscopy, X‐ray photoelectron spectroscopy (XPS), and electrochemical measurements. The rGO/Tyr nanomaterial displayed good electrocatalytic activity for the detection of hydrogen peroxide (H 2 O 2 ) with a wide linear range from 100 µM to 2.1 mM, a detection limit of 80 µM and a sensitivity of 69.07 µA mM −1 cm −2 . In addition, the rGO/Tyr electrode showed good selectivity for H 2 O 2 detection in the presence of uric acid, ascorbic acid, dopamine and glucose.