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A Nonenzymatic Hydrogen Peroxide Sensor Based on Silver Nanowires and Chitosan Film
Author(s) -
Gao Xia,
Jin Lingyan,
Wu Qi,
Chen Zhichun,
Lin Xianfu
Publication year - 2012
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.201200109
Subject(s) - hydrogen peroxide , scanning electron microscope , amperometry , electrochemistry , materials science , nanowire , polyol , chitosan , nuclear chemistry , manganese , detection limit , chemical engineering , electrochemical gas sensor , chemistry , nanotechnology , electrode , organic chemistry , chromatography , metallurgy , composite material , polyurethane , engineering
A nonenzymatic amperometric electrochemical sensor for the detection of hydrogen peroxide (H 2 O 2 ) was fabricated based on highly dense silver nanowires (Ag NWs) and chitosan (CS) film. Ag NWs were synthesized by a poly(vinyl pyrrolidone) (PVP)‐mediated polyol process in the presence of manganese chloride (MnCl 2 ), and were characterized by scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDS), and X‐ray diffraction (XRD). Under the optimal conditions, the proposed nonenzymatic sensor exhibited good electrocatalytic activity towards the reduction of H 2 O 2 , and could detect H 2 O 2 in the linear range of 0.008–1.35 mM, with a detection limit of 2 µM ( S / N =3).