Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 518, Issue -, Pages 124-129Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2017.01.027
Keywords
Electrocatalysis; Core-shell structure; Ag@SiO2@Ag Nanomaterial; Hydrogen peroxide
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Funding
- National Science Fund of China [21275116, 21575113]
- Specialized Research Fund for the Doctoral Program of Higher Education [20126101110013]
- Natural Science Fund of Shaanxi Province in China [2013KJXX-25]
- Scientific Research Foundation of Shaanxi Provincial Key Laboratory [13JS097, 13JS098, 14JS094, 15JS100]
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Ag@SiO2@Ag core-shell structure nanomaterial was synthesized by a simple one-step method, and applied to electrochemical sensing detection of H2O2. The results of transmission electron microscope (TEM), X-ray diffraction (XRD) and energy dispersive spectrometry (EDS) verified the morphology, structure and composition of Ag@SiO2@Ag nanomaterial. The current response of the Ag@SiO2@Ag sensor was linearly toward to concentration of H2O2 between 0.005 mM and 24.0 mM with a detection limit of 1.7 mu M at a signal-to-noise ratio of 3. The sensitivity was 56.07 mu A mM(-1) cm(-2). The Ag@SiO2@Ag/GCE exhibited wide linear range and high sensitivity for electrochemical detection of H2O2. (C) 2017 Elsevier B.V. All rights reserved.
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