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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
Abstract 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.