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Synthesis of Ag Nanoparticle Doped MnO 2 /GO Nanocomposites at a Gas/Liquid Interface and its Application in H 2 O 2 Detection
Author(s) -
Zhang Jian,
Rao Dejiang,
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.201500398
Subject(s) - x ray photoelectron spectroscopy , nanocomposite , detection limit , materials science , analytical chemistry (journal) , transmission electron microscopy , doping , nanoparticle , scanning electron microscope , spectroscopy , electrochemistry , nanotechnology , chemical engineering , electrode , chemistry , optoelectronics , chromatography , composite material , engineering , physics , quantum mechanics
Ag/MnO 2 /GO nanocomposites were synthesized via the method of gas/liquid interface based on silver mirror reaction, and a non‐enzymatic H 2 O 2 sensor was fabricated through immobilizing Ag/MnO 2 /GO nanocomposites on GCE. The composition and morphology of the nanocomposites were studied by energy‐dispersive X‐ray spectroscopy (EDS), X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Electrochemical investigation indicated that it exhibited a favorable performance for the H 2 O 2 detection. Its linear detection range was from 3 μM to 7 mM with a correlation coefficient of 0.9960; the sensitivity was 105.40 μA mM −1 cm −2 and the detection limit was estimated to be 0.7 μM at a signal‐to‐noise ratio of 3.