Synthesis of Ag Nanoparticle Doped MnO2/GO Nanocomposites at a Gas/Liquid Interface and its Application in H2O2 Detection |
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| Authors: | Jian Zhang Dejiang Rao Jianbin Zheng |
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| Institution: | Institute of Analytical Science, Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Northwest University, Xi'an, Shaanxi 710069, China, Tel./fax: +86 29 88303448 |
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| Abstract: | Ag/MnO2/GO nanocomposites were synthesized via the method of gas/liquid interface based on silver mirror reaction, and a non‐enzymatic H2O2 sensor was fabricated through immobilizing Ag/MnO2/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 H2O2 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. |
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| Keywords: | gas/liquid interface silver mirror reaction H2O2 sensor |
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