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Novel Nonenzymatic Hydrogen Peroxide Sensor Based on Ag/Cu 2 O Nanocomposites
Author(s) -
Qi Chengcheng,
Zheng Jianbin
Publication year - 2016
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.201500296
Subject(s) - scanning electron microscope , nanocomposite , detection limit , materials science , transmission electron microscopy , analytical chemistry (journal) , hydrogen peroxide , diffraction , electrochemistry , nuclear chemistry , electrode , chemistry , nanotechnology , optics , chromatography , organic chemistry , composite material , physics
The nanocomposites of Ag nanoparticles supported on Cu 2 O were prepared and used for fabricating a novel nonenzymatic H 2 O 2 sensor. The morphology and composition of the nanocomposites were characterized using the scanning electron microscope (SEM), transmission electron microscope (TEM), energy‐dispersive X‐ray spectrum (EDX) and X‐ray diffraction spectrum (XRD). The electrochemical investigations indicate that the sensor possesses an excellent performance toward H 2 O 2 . The linear range is estimated to be from 2.0 μM to 13.0 mM with a sensitivity of 88.9 μA mM −1 cm −2 , a response time of 3 s and a low detection limit of 0.7 μM at a signal‐to‐noise ratio of 3. Additionally, the sensor exhibits good anti‐interference.